HD404374 Datasheet, PDF (33/161 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip A/D Converter

HD404374/HD404384/HD404389/HD404082/HD404084 Series
Table 1 (1) Initial Values after MCU Reset
Item
Program counter
Status flag
Stack pointer
Interrupt Interrupt enable flag
flags/ mask Interrupt request flag
Interrupt mask
I/O
Port data register
Data control registers
Data control registers
Timers
Port mode register 0
Port mode register 1
Port mode register 2
Port mode register 3
Timer mode register A
Timer mode register B1
Timer mode register B2
Timer mode register C1
Timer mode register C2
Prescaler S
Prescaler W
Timer/counter A
Timer/counter B
Timer/counter C
Timer write register B
Timer write register C
Abbr.
Initial
value Contents
(PC)
$0000 Program executed from ROM start address
(ST)
1
Branching by conditional branch instruction enabled
(SP)
$3FF Stack level is 0
(IE)
0
All interrupts disabled
(IF)
0
No interrupt requests
(IM)
1
Interrupt requests masked
(PDR)
All bits 1 "1" level output possible
(DCD0 ~ 2) All bits 0 Output buffer off (high impedance)
(DCR0₀ ,
DCR1₀,
DCR1₃,
DCR2₀ –
DCR2₂,
DCR7₀ –
DCR7₃)
(PMR0)
All bits 0
---0
See port mode register 0 section
(PMR1)
---0
See port mode register 1 section
(PMR2)
0--0
See port mode register 2 section
(PMR3)
0000 See port mode register 3 section
(TMA)
0000 See timer mode register A section
(TMB1)
0000 See timer mode register B1 section
(TMB2)
-000 See timer mode register B2 section
(TMC1)
0000 See timer mode register C1 section
(TMC2)
-0--
See timer mode register C2 section
(PSS)
$000
(PSW)
$00
(TCA)
$00
(TCB)
$00
(TCC)
$00
(TWBU,L) $X0
(TWCU,L) $X0
Rev.5.00, Sep.11.2003, page 33 of 161