SRI4K-A3T/1GE STMicroelectronics, SRI4K-A3T/1GE Datasheet - Page 28

• Manufacturer Part Number: SRI4K-A3T/1GE
• Manufacturer: STMicroelectronics

Specifications of SRI4K-A3T/1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Compliant

SRI4K
WRITE_BLOCK (Addr, Data) Command
Command Code = 09h
On receiving the WRITE_BLOCK command, the
SRI4K writes the 4 bytes contained in the com-
mand to the addressed block, provided that the
block is available and not Write-protected. Data
Bytes are transmitted with the Least Significant
Byte first, and each byte is transmitted with the
least significant bit first.
The address Byte gives access to the 128 blocks
of
WRITE_BLOCK commands issued with a block
address above 127 will not be interpreted and the
SRI4K will not return any response, except for the
System area located at address 255.
Figure 46. WRITE_BLOCK Request Format
Request parameters:
Figure 47. WRITE_BLOCK Response Format
Figure 48. WRITE_BLOCK Frame Exchange Between Reader and SRI4K
28/41
Reader
SRI4K
SOF
the
WRITE_BLOCK
SRI4K
SOF
09h
09h
(addresses
ADDR
ADDRESS
8 bIts
DATA
1
0
DATA
DATA 1
8 bIts
2
to
DATA
127).
3
No Response
DATA 2
8 bIts
DATA
4
The result of the WRITE_BLOCK command is
submitted to the addressed block. See the follow-
ing paragraphs for a complete description of the
WRITE_BLOCK command:
–
–
–
The WRITE_BLOCK command does not give rise
to a response from the SRI4K. The reader must
check after the programming time, t
data was correctly programmed. The SRI4K must
have received a SELECT() command and be
switched
WRITE_BLOCK command can be accepted. All
WRITE_BLOCK commands sent to the SRI4K be-
fore a SELECT() command is issued, are ignored.
–
–
–
–
–
CRC L CRC H EOF
DATA 3
8 bIts
Resettable OTP Area (addresses 0 to
Binary Counter (addresses 5 to
EEPROM (Addresses 7 to
ADDRESS: block addresses from 0 to 127, or
255
DATA 1: Less significant data Byte
DATA 2: Data Byte
DATA 3: Data Byte
DATA 4: Most significant data Byte.
to
DATA 4
8 bIts
SELECTED
CRC L
8 bits
No Response
state
127).
CRC H
8 bIts
6).
AI07680
before
W
, that the
EOF
AI10891
4).
AI07687
any