MEMORY MAP
KS57C2308/P2308/C2316/P2316
4-24
PSW
— Program Status Word
FB1H, FB0H
Bit
7
6
5
4
3
2
1
0
Identifier
C
SC2
SC1
SC0
IS1
IS0
EMB
ERB
RESET
Value
(1)
0
0
0
0
0
0
0
Read/Write
R/W
R
R
R
R/W
R/W
R/W
R/W
Bit Addressing
(2)
8
8
8
1/4/8
1/4/8
1/4/8
1/4/8
C
Carry Flag
0
No overflow or borrow condition exists
1
An overflow or borrow condition does exist
SC2–SC0
Skip Condition Flags
0
No skip condition exists; no direct manipulation of these bits is allowed
1
A skip condition exists; no direct manipulation of these bits is allowed
IS1, IS0
Interrupt Status Flags
0
0
Service all interrupt requests
0
1
Service only the high-priority interrupt(s) as determined in the interrupt
priority register (IPR)
1
0
Do not service any more interrupt requests
1
1
Undefined
EMB
Enable Data Memory Bank Flag
0
Restrict program access to data memory to bank 15 (F80H–FFFH) and to
the locations 000H–07FH in the bank 0 only
1
Enable full access to data memory banks 0, 1, 2, and 15
ERB
Enable Register Bank Flag
0
Select register bank 0 as working register area
1
Select register banks 0, 1, 2, or 3 as working register area in accordance with
the select register bank (SRB) instruction operand
NOTES
:
1.
The value of the carry flag after a RESET occurs during normal operation is undefined. If a RESET occurs during
power-down mode (IDLE or STOP), the current value of the carry flag is retained.
2.
The carry flag can only be addressed by a specific set of 1-bit manipulation instructions. See Section 2 for
detailed information.
Summary of Contents for KS57C2308
Page 30: ...ADDRESS SPACES KS57C2308 P2308 C2316 P2316 2 22 NOTES ...
Page 168: ...SAM47 INSTRUCTION SET KS57C2308 P2308 C2316 P2316 5 94 NOTES ...
Page 170: ......
Page 206: ...POWER DOWN KS57C2308 P2308 C2316 P2316 8 8 NOTES ...
Page 210: ...RESET KS57C2308 P2308 C2316 P2316 9 4 NOTES ...
Page 222: ...I O PORTS KS57C2308 P2308 C2316 P2316 10 12 NOTES ...
Page 272: ...LCD CONTROLLER DRIVER KS57C2308 P2308 C2316 P2316 12 24 NOTES ...
Page 280: ...SERIAL I O INTERFACE KS57C2308 P2308 C2316 P2316 13 8 NOTES ...
Page 294: ...MECHANICAL DATA KS57C2308 P2308 C2316 P2316 15 2 NOTES ...
Page 310: ...KS57P2308 P2316 OTP KS57C2308 P2308 C2316 P2316 16 16 NOTES ...
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