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PM0020 Datasheet(PDF) 65 Page - STMicroelectronics

Part # PM0020
Description  STR91xFA Flash programming manual
PDF  87 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0020 Datasheet(HTML) 65 Page - STMicroelectronics

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PM00020
ISC logic description
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12.4.3
IDcode register
12.4.4
Usercode register
12.4.5
MFG register
Bit 2
READY/BUSY: Ready/Busy status bit
0: Busy*
1: Ready
This bit goes low 1us after an internal ERASE, PROGRAM, READ, or BLANK
CHECK operation is initiated. The polling loop which checks busy status, for
PROGRAM or ERASE operations, must not begin before the 1us delay. This will
avoid a false end of operation status. BUSY status should be polled to
determine when any operation on the Flash is over.
Bits 1:0
ISC_ERROR:
These bits comply with IEEE 1532 standard.
The ISC Error bits indicate the ISC status of the previously executed instruction.
They are updated any time a new instruction is loaded. The ISC Error bits
indicate error only if an ISC instruction is loaded and the part is not in ISC mode.
00: N/A.
01: Error
10: Success (default)
11: N/A.
31
0
IDcode[31:0]
rw
Bits 31:0
IDCode
31
0
Usercode[31:0]
rw
Bits 31:0
Usercode
32 bits shift out only for USERCODE instruction
32 bits shift in of user code data for ISC_PROGRAM_UC instruction
31
0
MFG[31:0]
rw
Bits 31:0
Manufacturing information. Factory use only.



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