CHAPTER 18 RESET FUNCTION
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User’s Manual U11302EJ4V0UM
Table 18-1. Hardware Status After Reset (1/2)
Hardware
Status After Reset
Program counter (PC)
Note 1
The contents of reset
vector tables (0000H
and 0001H) are set.
Stack pointer (SP)
Undefined
Program status word (PSW)
02H
RAM
Data memory
Undefined
Note 2
General-purpose registers
Undefined
Note 2
Ports (output latches)
Ports 0 to 3, 7 to 12 (P0 to P3, P7 to P12)
00H
Port mode registers
(PM0, PM7)
1FH
(PM1, PM2, PM3, PM10, PM11, PM12)
FFH
Pull-up resistor option register (PUO)
00H
Processor clock control register (PCC)
04H
Internal memory size switching register (IMS)
Note 3
Internal expansion RAM size switching register (IXS)
Note 3
Oscillation stabilization time select register (OSTS)
04H
16-bit timer/event counter
Timer register (TM0)
00H
Compare register (CR00)
Undefined
Capture register (CR01)
Undefined
Clock select register (TCL0)
00H
Mode control register (TMC0)
00H
Output control register (TOC0)
00H
8-bit timer/event counter
Timer registers (TM1, TM2)
00H
Compare registers (CR10, CR20)
Undefined
Clock select register (TCL1)
00H
Mode control registers (TMC1, TMC2)
00H
Output control register (TOC1)
00H
Notes 1.
During reset input or oscillation stabilization time wait, only the PC contents among the hardware
statuses become undefined. All other hardware statuses remain unchanged after reset.
2.
If the reset is applied in the standby mode, the status before reset will be held after reset.
3.
The after-reset values of the internal memory size switching register (IMS) and internal expansion
RAM size switching register (IXS) depend on the product.
µ
PD780204
µ
PD780204A
µ
PD780205
µ
PD780205A
µ
PD780206
µ
PD780208
µ
PD78P0208
IMS
C8H
CFH
CAH
CFH
CCH
CFH
CFH
IXS
None
0AH