7547 datasheet(15/91 Pages) RENESAS

15 / 91 page

Rev.1.21

Nov 15, 2006

page 15 of 89

REJ03B0156-0121

7547 Group

Fig. 13 Block diagram of ports (1)

(1) Port P00

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

Capture 0 input

P00 key-on wakeup

selection bit

Drive capacity

control

Capture 0 input control

(2) Ports P01, P02

Compare output

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

Compare output control

Drive capacity

control

(3) Port P03

Timer output

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

P03/TXOUT output valid

Drive capacity

control

(4) Port P04

Serial I/O2 input

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

Serial I/O2 enable bit

Drive capacity

control

P04 key-on wakeup

selection bit

Receive enable bit

(5) Port P05

Serial I/O2 output

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

Serial I/O2 enable bit

Drive capacity

control

Transmit enable bit

(6) Port P06

Serial I/O2 clock output

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

Serial I/O2 mode selection bit

Drive capacity

control

Serial I/O2 enable bit

Serial I/O2 synchronous

clock selection bit

Serial I/O2 clock input

P06 key-on wakeup

selection bit

Serial I/O2 enable bit

(7) Port P07

Serial I/O2 ready output

Direction

Data bus

Port latch

Pull-up control

To key input interrupt

generating circuit

Serial I/O2 mode selection bit

Serial I/O2 enable bit

SRDY2 output enable bit

Drive capacity

control

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