4513 datasheet(23/97 Pages) RENESAS

23 / 97 page

4513/4514 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

(6) Interrupt control registers

• Interrupt control register V1

Interrupt enable bits of external 0, external 1, timer 1 and timer 2

are assigned to register V1. Set the contents of this register

through register A with the TV1A instruction. The TAV1 instruction

can be used to transfer the contents of register V1 to register A.

• Interrupt control register V2

Interrupt enable bits of timer 3, timer 4, A-D and serial I/O are as-

signed to register V2. Set the contents of this register through

used to transfer the contents of register V2 to register A.

Table 6 Interrupt control registers

V13

V12

V11

V10

V23

V22

V21

V20

Serial I/O interrupt enable bit

A-D interrupt enable bit

Timer 4 interrupt enable bit

Timer 3 interrupt enable bit

Interrupt control register V1

Timer 2 interrupt enable bit

Timer 1 interrupt enable bit

External 1 interrupt enable bit

External 0 interrupt enable bit

Note: “R” represents read enabled, and “W” represents write enabled.

Interrupt disabled (SNZT2 instruction is valid)

Interrupt enabled (SNZT2 instruction is invalid)

Interrupt disabled (SNZT1 instruction is valid)

Interrupt enabled (SNZT1 instruction is invalid)

Interrupt disabled (SNZ1 instruction is valid)

Interrupt enabled (SNZ1 instruction is invalid)

Interrupt disabled (SNZ0 instruction is valid)

Interrupt enabled (SNZ0 instruction is invalid)

Interrupt disabled (SNZSI instruction is valid)

Interrupt enabled (SNZSI instruction is invalid)

Interrupt disabled (SNZAD instruction is valid)

Interrupt enabled (SNZAD instruction is invalid)

Interrupt disabled (SNZT4 instruction is valid)

Interrupt enabled (SNZT4 instruction is invalid)

Interrupt disabled (SNZT3 instruction is valid)

Interrupt enabled (SNZT3 instruction is invalid)

R/W

at RAM back-up : 00002

at reset : 00002

R/W

at RAM back-up : 00002

at reset : 00002

Interrupt control register V2

R/W

at RAM back-up : 00002

at reset : 00002

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