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2 CPu
D3
PSRC: PSR Carry (C) Flag Bit
The value of the PSR C (carry) flag can be read out.
1 (R):
1
0 (R):
0 (default)
D2
PSRV: PSR Overflow (V) Flag Bit
The value of the PSR V (overflow) flag can be read out.
1 (R):
1
0 (R):
0 (default)
D1
PSRZ: PSR Zero (Z) Flag Bit
The value of the PSR Z (zero) flag can be read out.
1 (R):
1
0 (R):
0 (default)
D0
PSRn: PSR negative (n) Flag Bit
The value of the PSR N (negative) flag can be read out.
1 (R):
1
0 (R):
0 (default)
2.5
Processor information
The S1C17624/604/622/602/621 has the IDIR register shown below that allows the application software to identify
CPU core type.
Processor iD Register (iDiR)
Register name address
Bit
Processor iD
0xffff84
D7–0 iDiR[7:0]
Register
(8 bits)
(iDiR)
This is a read-only register that contains the ID code to represent a processor model. The S1C17 Core's ID code is
0x10.
2-6
name
Function
Processor ID
0x10: S1C17 Core
Seiko epson Corporation
Setting
init. R/W
0x10
0x10
R
S1C17624/604/622/602/621 TeChniCal Manual
Remarks
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