ST10F272Z2Q3 View Datasheet(PDF) - STMicroelectronics

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Description

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ST10F272Z2Q3

16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM

STMicroelectronics 

Internal Flash memory

ST10F272

5.4.3

Table 8.

Bit

SUSP

WMS

Flash control register 0 high (continued)

Function

Suspend

This bit must be set to suspend the current Program (Word or Double Word) or

Sector Erase operation in order to read data in one of the Sectors of the Bank

under modification or to program data in another Bank. The Suspend operation

resets the Flash Bank to normal read mode (automatically resetting bit BSY0).

When in Program Suspend, the Flash module accepts only the following

operations: Read and Program Resume. When in Erase Suspend the module

accepts only the following operations: Read, Erase Resume and Program (Word

or Double Word; Program operations cannot be suspended during Erase

Suspend). To resume a suspended operation, the WMS bit must be set again,

together with the selection bit corresponding to the operation to resume (WPG,

DWPG, SER).

Note: It is forbidden to start a new Write operation with bit SUSP already set.

Write Mode Start

This bit must be set to start every write operation in the Flash module. At the end

of the write operation or during a Suspend, this bit is automatically reset. To

resume a suspended operation, this bit must be set again. It is forbidden to set this

bit if bit ERR of FER is high (the operation is not accepted). It is also forbidden to

start a new write (program or erase) operation (by setting WMS high) when bit

SUSP of FCR0 is high. Resetting this bit by software has no effect.

Flash control register 1 low

The Flash Control Register 1 Low (FCR1L), together with Flash Control Register 1 High

(FCR1H), is used to select the Sectors to Erase, or during any write operation to monitor the

status of each Sector and Bank.

FCR1L (0x08 0004)

15 14 13 12 11 10

reserved

FCR

Reset value: 0000h

9876543210

B0F7 B0F6 B0F5 B0F4 B0F3 B0F2 B0F1 B0F0

RS RS RS RS RS RS RS RS

Table 9.

Bit

B0F(7:0)

Flash control register 1 low

Function

Bank 0 IFLASH Sector 9:0 Status

These bits must be set during a Sector Erase operation to select the sectors to

erase in Bank 0. Besides, during any erase operation, these bits are automatically

set and give the status of the 8 sectors of Bank 0 (B0F7-B0F0). The meaning of

B0Fy bit for Sector y of Bank 0 is given by the next Table 4 Banks (BxS) and

Sectors (BxFy) Status bits meaning. These bits are automatically reset at the end

of a Write operation if no errors are detected.

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