DocID13284 Rev 2 543/564
UM0404 Register set
Writing byte to SFRs
All special function registers may be accessed word wise or byte wise (some of them even
bit wise). Reading byte from word SFRs is a non-critical operation. However, when writing
byte to word SFRs the complementary byte of the respective SFR is cleared with the write
operation.
26.10 Identification registers
The ST10F276 has four Identification registers, mapped in ESFR space. These registers
contain:
• A manufacturer identifier.
• A chip identifier with its revision.
• An internal Flash and size identifier.
• Programming voltage description.
IDMANUF (F07Eh / 3Fh) ESFR Reset Value: 0403h
IDCHIP (F07Ch / 3Eh) ESFR Reset Value: 114xh
IDMEM (F07Ah / 3Dh) ESFR Reset Value:30D0h
1514131211109876543210
MANUF 00011
R
Bit Function
MANUF
Manufacturer Identifier
020h: STMicroelectronics manufacturer (JTAG worldwide normalization).
1514131211109876543210
PCONF IDCHIP REVID
RR R
Bit Function
PCONF
Peripheral Configuration
‘00’: (E) Enhanced (ST10F276x)
‘01’: (B) Basic
‘10’: (D) Dedicated
‘11’: reserved
IDCHIP
Device Identifier
114h: ST10F276 Identifier (276 in decimal format).
REVID
Device Revision Identifier
Xh: According to revision number (1: for Axx steps, 2: for Bxx, 3: for Cxx and so on)
1514131211109876543210
MEMTYP MEMSIZE
RR
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