CHAPTER 18 RESET FUNCTIONY
User’s Manual U14800EJ3V0UD
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Table 18-1. Hardware Status After Reset
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
Data memory
Undefined
Note 2
RAM
General-purpose register
Undefined
Note 2
Port (P0 to P3, P5) (Output latch)
00H
Port mode register (PM0 to PM3, PM5)
FFH
Pull-up resistor option register (PU0, PUB2, PUB3)
00H
Processor clock control register (PCC)
02H
Suboscillation mode register (SCKM)
00H
Subclock control register (CSS)
00H
Oscillation stabilization time select register (OSTS)
Note 3
04H
Timer counter (TM20)
0000H
Compare register (CR20)
FFFFH
Control register (TMC20)
00H
16-bit timer 20
Capture register (TCP20)
Undefined
Timer counter (TM30, TM40)
00H
Compare register (CR30, CR40, CRH40)
Undefined
8-bit timer 30, 40
Mode control register (TMC30, TMC40)
00H
Watch timer
Mode control register (WTM)
00H
Clock select register (WDCS)
00H
Watchdog timer
Mode register (WDTM)
00H
Serial operation mode register (CSIM10, CSIM20)
00H
Asynchronous serial interface mode register (ASIM20)
00H
Asynchronous serial interface status register (ASIS20)
00H
Baud rate generator control register (BRGC20)
00H
Transmit shift register (TXS20)
FFH
Serial interface 20
Receive buffer register (RXB20)
Undefined
Display mode register (LCDM0)
00H
Clock control register (LCDC0)
00H
LCD controller/driver
Voltage amplification control register (LCDVA0)
00H
Request flag register (IF0, IF1)
00H
Mask flag register (MK0, MK1)
FFH
External interrupt mode register (INTM0, INTM1)
00H
Interrupt
Key return mode register (KRM00)
00H
Notes 1. During reset input and oscillation stabilization time wait, only the PC contents among the hardware
statuses become undefined. All other hardware remains unchanged after reset.
2. The post-reset values are retained in the standby mode.
3.
PD789306 Subseries only