Hardware Status After Reset - NEC mPD780208 Subseries User Manual

Note 1
Program counter (PC)
Stack pointer (SP)
Program status word (PSW)
RAM
Ports (output latches)
Port mode registers
Pull-up resistor option register (PUO)
Processor clock control register (PCC)
Internal memory size switching register (IMS)
Internal expansion RAM size switching register (IXS)
Oscillation stabilization time select register (OSTS)
16-bit timer/event counter
8-bit timer/event counter
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
IMS C8H
IXS None
CHAPTER 18 RESET FUNCTION
Table 18-1. Hardware Status After Reset (1/2)
Hardware
Data memory
General-purpose registers
Ports 0 to 3, 7 to 12 (P0 to P3, P7 to P12)
(PM0, PM7)
(PM1, PM2, PM3, PM10, PM11, PM12)
Timer register (TM0)
Compare register (CR00)
Capture register (CR01)
Clock select register (TCL0)
Mode control register (TMC0)
Output control register (TOC0)
Timer registers (TM1, TM2)
Compare registers (CR10, CR20)
Clock select register (TCL1)
Mode control registers (TMC1, TMC2)
Output control register (TOC1)
µ PD780204A µ PD780205
CFH CAH
User's Manual U11302EJ4V0UM
µ PD780205A µ PD780206
CFH CCH
0AH
Status After Reset
The contents of reset
vector tables (0000H
and 0001H) are set.
Undefined
02H
Note 2
Undefined
Note 2
Undefined
00H
1FH
FFH
00H
04H
Note 3
Note 3
04H
00H
Undefined
Undefined
00H
00H
00H
00H
Undefined
00H
00H
00H
µ PD780208 µ PD78P0208
CFH CFH
369