NAND128-A, NAND256-A, NAND512-A, NAND01G-A
Table 11. Status Register Bits
Bit
Name
Logic Level
Definition
'1'
'0'
'1'
'0'
Not Protected
Protected
SR7
Write Protection
P/E/R C inactive, device ready
P/E/R C active, device busy
Program/ Erase/ Read
Controller
SR6
SR5, SR4,
SR3, SR2, SR1
Reserved
Don’t Care
‘1’
‘0’
Error – operation failed
SR0
Generic Error
No Error – operation successful
Read Electronic Signature
Table 12. Electronic Signature
Manufacturer
The device contains a Manufacturer Code and De-
vice Code. To read these codes two steps are re-
quired:
1. first use one Bus Write cycle to issue the Read
Electronic Signature command (90h)
Part Number
Code
Device code
NAND128R3A
20h
33h
73h
NAND128W3A
2. then perform two Bus Read operations – the
first will read the Manufacturer Code and the
second, the Device Code. Further Bus Read
operations will be ignored.
Refer to Table 12., Electronic Signature, for infor-
mation on the addresses.
NAND128R4A
0020h
0043h
0053h
35h
NAND128W4A
NAND256R3A
20h
NAND256W3A
75h
NAND256R4A
0020h
0045h
0055h
36h
NAND256W4A
NAND512R3A
20h
NAND512W3A
76h
NAND512R4A
0020h
0046h
0056h
39h
NAND512W4A
NAND01GR3A
20h
NAND01GW3A
79h
NAND01GR4A
0020h
NAND01GW4A
0049h
0059h
29/57
STMICROELECTRONICS [ ST ]
