UPD750004 datasheet(39/86 Pages) RENESAS

39 / 86 page

µPD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)

Data Sheet U10738EJ3V2DS

Table 9-1

Status of the Hardware after a Reset (1/2)

Program counter (PC)

PSW

Stack pointer (SP)

Stack bank selection register (SBS)

Data memory (RAM)

General-purpose registers (X, A, H, L, D, E, B, C)

Bank selection register (MBS, RBS)

Timer/event

counter

Timer counter

Clock timer

Serial interface

4 low-order bits at address 0000H

in program memory are set in PC

bits 11 to 8, and the data at address

0001H are set in PC bits 7 to 0.

5 low-order bits at address 0000H

in program memory are set in PC

bits 12 to 8, and the data at address

0001H are set in PC bits 7 to 0.

Held

Bit 6 at address 0000H in

program memory is set in RBE,

and bit 7 is set in MBE.

Undefined

1000B

Held

0, 0

Undefined

FFH

0, 0

FFH

0, 0

Held

4 low-order bits at address 0000H

in program memory are set in PC

bits 11 to 8, and the data at address

0001H are set in PC bits 7 to 0.

5 low-order bits at address 0000H

in program memory are set in PC

bits 12 to 8, and the data at address

0001H are set in PC bits 7 to 0.

Undefined

Bit 6 at address 0000H in program

memory is set in RBE, and bit 7 is

set in MBE.

Undefined

1000B

Undefined

0, 0

Undefined

FFH

0, 0

FFH

0, 0

Undefined

Generation of a RESET signal

during operation

Generation of a RESET signal in

a standby mode

Hardware

Carry flag (CY)

Skip flags (SK0 to SK2)

Interrupt status flags (IST0, IST1)

Bank enable flags (MBE, RBE)

µPD750004

µPD750006, 750008

Counter (BT)

Mode register (BTM)

Watchdog timer enable flag

(WDTM)

Counter (T0)

Modulo register (TMOD0)

Mode register (TM0)

TOE0, TOUT flip-flop

Counter (T1)

Modulo register (TMOD1)

Mode register (TM1)

TOE1, TOUT flip-flop

Mode register (WM)

Shift register (SIO)

Operation mode register (CSIM)

SBI control register (SBIC)

Slave address register (SVA)

Basic interval

timer/ watchdog

timer

UPD750004 데이터시트(PDF) 39 Page - Renesas Technology Corp

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