ST10F276 datasheet(166/229 Pages) STMICROELECTRONICS

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ST10F276

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Note:

All identification words are read-only registers.

The values written inside different Identification Register bits are valid only after the Flash

initialization phase is completed. When code execution is started from internal memory (pin

EA held high during reset), the Flash has completed its initialization, so the bits of

Identification Registers are immediately ready to be read out. On the contrary, when code

execution is started from external memory (pin EA held low during reset), the Flash

initialization is not yet completed, so the bits of Identification Registers are not ready. The

user can poll bits 15 and 14 of IDMEM register: When both bits are read low, the Flash

initialization is complete, so all Identification Register bits are correct.

Before Flash initialization completion, the default setting of the different identification

registers are the following:

Table 75.

IDMEM description

Bit

Function

MEMSIZE

Internal memory size

Internal Memory size is 4 x (MEMSIZE) (in Kbyte)

0D0h for ST10F276 (832 Kbytes)

MEMTYP

Internal memory type

‘0h’: ROM-Less

‘1h’: (M) ROM memory

‘2h’: (S) Standard FLASH memory

‘3h’: (H) High Performance FLASH memory (ST10F276)

‘4h...Fh’: reserved

IDPROG (F078h / 3Ch)

ESFR

Reset value:0040h

987

65432

PROGVPP

PROGVDD

Table 76.

IDPROG description

Bit

Function

PROGVDD

Programming VDD voltage

VDD voltage when programming EPROM or FLASH devices is calculated using

the following formula: VDD = 20 x [PROGVDD] / 256 (volts) - 40h for ST10F276

(5V).

PROGVPP

Programming VPP voltage (no need of external VPP) - 00h

IDMANUF

0403h

IDCHIP

114xh (x = silicon revision)

IDMEM

F0D0h

IDPROG

0040h

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