ST7FLU05MCE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7FLU05MCE

8-bit low cost, low pin-count MCU for automotive, with single voltage Flash memory, ADC, timers

STMicroelectronics 

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Flash program memory

4

Flash program memory

ST7LUS5, ST7LU05, ST7LU09

4.1

Introduction

The ST7 single voltage extended Flash (XFlash) is a non-volatile memory that can be

electrically erased and programmed either on a byte-by-byte basis or up to 32 bytes in

parallel.

The XFlash devices can be programmed off-board (plugged in a programming tool) or on-

board using in-circuit programming or in-application programming.

The array matrix organization allows each sector to be erased and reprogrammed without

affecting other sectors.

t(s) 4.2

Main features

duc ● ICP (in-circuit programming)

ro ) ● IAP (in-application programming)

P t(s ● ICT (in-circuit testing) for downloading and executing user application test patterns in

te c RAM

le u ● Sector 0 size configurable by option byte

so rod ● Readout and write protection

- Ob te P 4.3

OObbssoolleettee PPrroodduucctt((ss)) - Obsole 4.3.1

Programming modes

The ST7 can be programmed in three different ways:

● Insertion in a programming tool - In this mode, Flash sectors 0 and 1 and option byte

row can be programmed or erased.

● In-circuit programming - In this mode, Flash sectors 0 and 1 and option byte row can be

programmed or erased without removing the device from the application board.

● In-application programming - In this mode, sector 1 can be programmed or erased

without removing the device from the application board and while the application is

running.

In-circuit programming (ICP)

ICP uses a protocol called ICC (in-circuit communication) which allows an ST7 plugged on a

printed circuit board (PCB) to communicate with an external programming device connected

via cable. ICP is performed in three steps:

1. Switch the ST7 to ICC mode (in-circuit communications). This is done by driving a

specific signal sequence on the ICCCLK/DATA pins while the RESET pin is pulled low.

When the ST7 enters ICC mode, it fetches a specific reset vector which points to the

ST7 System Memory containing the ICC protocol routine. This routine enables the ST7

to receive bytes from the ICC interface.

2. Download ICP driver code in RAM from the ICCDATA pin

3. Execute ICP driver code in RAM to program the Flash memory

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