NEC 78K0 User Manual page 349

Table 18-1. Hardware Statuses After Reset Acknowledgment (1/2)
Program counter (PC)
Stack pointer (SP)
Program status word (PSW)
RAM Data memory
General-purpose registers
Port registers (P0 to P3, P6, P7, P12, P13) (output latches)
Port mode registers (PM0, PM1, PM3, PM6, PM7, PM12)
Pull-up resistor option registers (PU0, PU1, PU3, PU7, PU12)
Input switch control register (ISC)
Internal memory size switching register (IMS)
Processor clock control register (PCC)
Ring-OSC mode register (RCM)
Main clock mode register (MCM)
Main OSC control register (MOC)
Oscillation stabilization time select register (OSTS)
Oscillation stabilization time counter status register (OSTC)
16-bit timer/event Timer counter 00 (TM00)
counter 00
Capture/compare registers 000, 010 (CR000, CR010)
Mode control register 00 (TMC00)
Prescaler mode register 00 (PRM00)
Capture/compare control register 00 (CRC00)
Timer output control register 00 (TOC00)
8-bit timer/event Timer counters 50, 51 (TM50, TM51)
counters 50, 51
Compare registers 50, 51 (CR50, CR51)
Timer clock selection registers 50, 51 (TCL50, TCL51)
Mode control registers 50, 51 (TMC50, TMC51)
8-bit timers H0, H1 Compare registers 00, 10, 01, 11 (CMP00, CMP10, CMP01, CMP11)
Mode registers (TMHMD0, TMHMD1)
Carrier control register 1 (TMCYC1)
Watch timer Operation mode register (WTM)
Watchdog timer Mode register (WDTM)
Enable register (WDTE)
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. When a reset is executed in the standby mode, the pre-reset status is held even after reset.
3. 8-bit timer H1 only.
CHAPTER 18 RESET FUNCTION
Hardware
Note 3
User's Manual U16227EJ2V0UD
Status After Reset
Note 1
Acknowledgment
The contents of the
reset vector table
(0000H, 0001H) are
set.
Undefined
02H
Note 2
Undefined
Note 2
Undefined
00H (undefined only
for P2)
FFH
00H
00H
CFH
00H
00H
00H
00H
05H
00H
0000H
0000H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
67H
9AH
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