PM0018 Quick reference manual
ST7 Flash programming
Introduction
This quick reference manual is intended for users of ST7 Flash microcontrollers. It is a central source for all device-specific data related to Flash programming for the following documents:

Flash programming reference manual ICC protocol reference manual

The latest document revisions can be obtained on-line at http://www.st.com.

May 2007

Rev 6

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www.st.com

Contents

ST7 Flash Programming

Contents
1 Device specific information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 1.2 1.3 1.4 Flash technology types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RC calibration value addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Implemented ICC features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 System memory addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Appendix A ST7SCR ICC mode entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
A.1 ROM product, ICC mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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ST7 Flash Programming

Device specific information

1
1.1

Device specific information
Flash technology types
Three Flash technologies are available in the ST7 family with different programming methods. Each ST7 Flash microcontroller is associated with one of these three technologies as shown in Table 1: ST7 Flash microcontroller types.

XFlash (Extended): Flash memory based on a EEPROM technology HDFlash (High Density): Flash memory based on Flash technology CFlash (ST72Cxxx): Flash memory based on a EEPROM technology (see AN1179 for more details)

For further information on XFlash and HDFlash, refer to the Flash programming reference manual. Table 1.
ST7 Flash families

ST7 Flash microcontroller types
Flash technology XFlash ST7 devices ST7FLITEx, ST7FDALI, ST7FLx ST72F26x, ST72F34x ST72F32x/F521, ST72F561, ST72F361 ST72F60x, ST72F61x, ST72F62x, ST72F63x, ST72F63Bx,ST72F65, ST72FHUB, ST7FSCR, ST7FMC ST72C104, ST72C215, ST72C216, ST72C254 ST72C124, ST72C314, ST72C334 ST72C171 ICP IAP Programming methods

ST72Fxxx HDFlash

ST72Cxxx

CFlash

ISP

1.2

RC calibration value addresses
Table 2 holds the addresses of the RC calibration values in the event of removal of readout protection. The full procedure of restoring RC calibration values is described in the Flash programming reference manual. This procedure applies only to the devices listed in the following table. For the other devices, the RC calibration values are not lost if the readout protection is removed. Table 2. List of RC calibration value addresses
Device ST7FLITE0/ST7FL0 ST7FLITE1 ST7FLITE2 RCCR0 0xF960 0xDEE0 0xDEE0 RCCR1 0xF961 0xDEE1 0xDEE1

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Device specific information

ST7 Flash Programming

1.3

Implemented ICC features
Table 3 defines the implemented ICC features and their main characteristics for each ST7 device. The data mentioned in this table is described in detail in the ICC protocol reference manual.

Description of legends for Table 3
ICC monitor: Three different ICC monitors can be implemented: basic (for ST7 with HDFlash and small XFlash), medium (for ST7 ROM) and advanced (for ST7 XFlash with debug module). Refer to the ICC protocol reference manual for more details. ICC mode entry: Different methods exists for entering ICC mode. Refer to the ICC protocol reference manual for more details. IAP:IAP is not available on 4K HDFlash versions. ICD: ICD can be managed with or without a debug module, refer to the ICC protocol reference manual for more details DM: The Debug Module (DM) is an ST7 hardware peripheral able to manage instruction stepping, complex breakpoints and abort for ICD development tools. The ST72F325, ST7FSuperlite, ST7FLite2 and ST7FHUB Debug Modules do not feature the WP bit capability and the register protection when MTR=0. Refer to the ICC protocol reference manual for more details. Ext clock: If this number of pulses is generated, the ST7 does not take into account the option byte configuration stored in the Flash memory, and an external clock has to be provided. In this case, the microcontroller configuration corresponds to the factory default option byte values, see product datasheet for more details. Note that in this mode, reserved Flash locations (which may contain internal oscillator calibration data for example) are not write protected, and could be corrupted if you program the device using a wrong address. Caution: To know on which pin the external clock must be provided please refer to the section related to the ICC interface in the product datasheet. Appli clock: If this number of pulses is generated, the ST7 takes into account the option byte configuration (except the watchdog which is always software in this condition). In this case, be sure that the selected clock source is available in the application (see product datasheet for more details). Note that in this mode, reserved Flash locations are write protected, so this mode is safer than external clock mode.

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ST7 Flash Programming Table 3. Implemented ICC features in ST7 devices
Embedded ICC applications Devices ICC monitor ICP IAP ICT DM ST7FLITE0/ST7FL0, ST7FLITES2/S5(1) basic X X X X X X X X X X X X X X X X X X X Controlled ST72F561/F361 ST7FHUB ST72F325/F321B ST72F321/F521 ST72F324BJ6/K6 ST7232x/521(9) (incl. L and B versions) ST72F32A ST72F324L ST72F324BJ2/J2 ST72F324BK4/K4 ST72F60x/F62x/F63x/ F63Bx/ST7FSCR ST72F651(1) ST7260/61x/62x/63x/ 63Bx/65/ ST7SCR(9) ST7FMC basic basic basic basic medium X X X X X X X X X X X X X X X 1 1 X ICD Window type

Device specific information

ICC mode entry Pulse Pulse counter reset pin Number Pin Ext. clock Appli clock

38 X X X X X ICCDATA 1 1 1 1 ICCCLK (2) 38(3) 35 38 (5) 38 38 (8) 38 38 (10) ICCSEL (7) 39 36

ST7FLITE2/1/ST7DALI advanced ST7FLITE4M/3/1B, ST7FL3/1B ST7FLITEUS(4), ST7LITEU0 ST72F34x (6) ST72F26x ST7226x(9) advanced advanced advanced advanced medium

basic

X

X

X

Not suppor ted

basic basic medium basic

X X

X X

X X X Fixed 256.tCPU Not applicable ICCSEL 38 (10)

X

X

X

X

1

Controlled

VPP/ ICCDATA ICCSEL(7)

38(11)

1. For these devices, the ST7 has to enter external clock mode in order to be able to reprogram devices with hardware watchdog enabled. Refer to the External Clock/Application Clock ICC modes section of the ICC protocol reference manual for more details. 2. The pulse counter is reset when RESET is low and ICCCLK is high. 3. In 38-pulse ICC mode, the internal RC oscillator is forced as a clock source, regardless of the selection in the option byte.

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Device specific information

ST7 Flash Programming

4. In the ST7FLITEUS, an interrupt is generated in ICC mode due to ICCCLK on PA1, configured as pull-up interrupt by default. The workaround is to enable the interrupt mask before the IRET of the ICC monitor, when executing the GO command. 5. Contrary to the behavior described in "appli clock" legend, the ST7FLITEUS takes into account the option byte configuration including the hardware watchdog if it is enabled. Consequently, 35-pulse mode must be used if hardware watchdog is enabled. In addition, when ST7FLITEUS is used in 38-pulse mode, the internal 8 MHz RC is selected as clock source if option CKSEL[1:0]=00h, otherwise, if CKSEL is not 00h, AWU RC is selected as clock source. External clock can not be selected when using 38-pulse mode. Limitation: In ST7FLITEUS when programming the LVD option from OFF to ON in 38-pulse mode and if the AVD is OFF, a spurious reset is generated and ICC communication is lost. The workaround is either to use 35-pulse mode or to ensure that the programming tool generates a reset after programming the Option Byte. 6. There are 4 option bytes in this device: Option byte 0 and 1 starting at address E000h and Option byte 2 and 3 starting at C000h. Take care to program Option byte 0, 1, 2 and 3 in the same routine. Then the following steps must be followed to modify the option bytes: -Read the 4 bytes in the device -Modify as desired -Write the 4 bytes in the device 7. The pulse counter is reset when RESET and ICCSEL are both low. 8. If ICC mode is entered using this pulse sequence, the clock source option bits must not be modified during the ICC session. To modify the clock source option bits, use the "external clock" pulse sequence. 9. All ROM devices support the medium variant of the ICC monitor. Hence these devices can be read if the Read-out protection has not been enabled. However it must be noted that only the program memory of these devices can be read but not the option bytes. 10. For these devices, if this number of pulses is generated, the ST7 can be supplied by an external clock source or a resonator. In this case, legends on "ext clock" and "applil clock" are not relevant. 11. For these devices, if this number of pulses is generated, the ST7 will be supplied by its internal clock. No external clock is required in ICC mode.

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ST7 Flash Programming

Device specific information

1.4

System memory addresses
In certain products, the System memory is accessible either in USER or ICC modes. Its address is given in Table 4 below.

Table 4.

System memory addresses
Product System memory addresses Identifier
(1)

Name ST7FLITE0/S2/S5/ ST7FL0 ST7FLITE1B ST7FL1B ST7FLITE2/1/FDALI ST7FLITE3/ST7FL3 STFLITE4M ST7FLITEUS ST7FLITEU0 ST72F26X ST7226X ST72F34X

ICC_mode F98Bh EF2Bh DF2Bh D F2Bh DF2Bh DF2Bh DF2Bh DF2Bh DF29h BF2Bh

ICC_monitor_trap F98Fh EF2Fh DF2Fh DF2Fh DF2Fh DF2Fh DF2Fh DF2Fh DF2Dh BF2Fh

ICC_send_byte NA EF00h DF00h DF00h DF00h DF00h DF00h DF00h DF00h BF00h

ICC_receive_byte F9A6h EF6Bh DF6Bh DF6Bh DF6Bh DF6Bh DF6Bh DF6Bh DF47h BF6Bh

819 1 829 1 837 1 852 0 878 0 875 0 876 0 825 1 826 1 864 1

1. For more details, refer to the ICC protocol reference manual.

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ST7SCR ICC mode entry

ST7 Flash Programming

Appendix A

ST7SCR ICC mode entry

For an external controller to be able to put the ST7SCR into ICC mode, the procedure has to be slightly modified because the ST7SCR has no external RESET pin to synchronize the start of the pulse train that defines ICC mode entry. Instead the synchronization has to be done on the VIT+ rising threshold at power on. This can be implemented by a external analog comparator with a threshold of 3.8V. As shown in Figure 1, a startup delay has to be inserted, specified as follows: tSTARTUP min. 50 s +128 tCPU tSTARTUP max. 50 s +384 tCPU Figure 1. Entering ICC mode with fixed tCPU window
3.8 V Threshold VDD ICCDATA ICCCLK fOSC/2 th(VppH) ICCSEL/VPP 38 Pulses within ST7 internal reset phase 4096 tCPU ICC monitor execution

tw(pulseL)

tsu(pulse) th(pulse)

Symbol tw(pulseL) tw(pulseH) th(VppH) tsu(pulse) th(pulse)

Min 62.5

Max ·

Unit ns

tw(pulseH)

50 s +128 clk 50 s +384 clk

tCPU

A.1

ROM product, ICC mode selection
In ROM ST7SCR devices, the VPP pin is replaced by a pin called TM (for Test mode). When this pin is high, the LVD is powered off, pin PA6 becomes a reset pin and pin PA0 becomes the VPP pin. To enter ICC mode: 1. 2. 3. 4. Hold the TM pin at high level. Reset the chip by applying a low level pulse on PA6 Apply 38 pulses on the PA0 pin as shown in Figure 1. When the mode entry window is finished, the PA0 port acts as the ICCDATA function.

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ST7 Flash Programming

Revision history

2

Revision history
Table 5.
Date 02-May-2005 16-Dec-2005 15-Fev-2006 17-July-2006

Document revision history
Revision 1 2 3 4 Initial release. Added information for ST72F325, ST72F361, ST7FLITE1B Added information in Table 3. for ST72F32A, ST7FL0,ST7FL3 Modified notes 6 and 7 on page 6 Added information in Table 1. and Table 3. for ST72F60, ST7260, ST72F63B, ST7263B, ST72F34x, ST7FLITEUS Modified text in Chapter 1.2: RC calibration value addresses ST7LITEU0 added in Table 3. and Table 4. Added note 11 to Table 3. Changed orders of the notes. Modified ST72F34x in Table 3. (ICCSEL instead of ICCCLK) STFLITE4M added to Table 3: Implemented ICC features in ST7 devices and Table 4: System memory addresses. Other changes in Table 3: information on ST72F32x devices modified, one Note removed and Note 3 added, 39 application clock pulses not supported on ST72F32A, Notes on legends in Table 3. replaced by a section: "description of legends for Table 3." Changes

23-Mar-2007

5

11-May-2007

6

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Revision history

ST7 Flash Programming

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