38D2 datasheet(20/136 Pages) RENESAS

20 / 136 page

Rev.3.02

Apr 10, 2008

Page 20 of 131

REJ03B0177-0302

38D2 Group

Fig. 13 Port block diagram (1)

(1) Ports P00-P03

(6) Port P33

(5) Port P32

(3) Port P30

Data bus

Serial I/O enable bit

Transmit enable bit

Serial I/O output

P32/TxD2 P-channel output disable bit

Port latch

Direction

Pull-up control

Serial I/O ready output

Data bus

Port latch

Serial I/O mode selection bit

Serial I/O enable bit

SRDY2 output enable bit

Direction

Pull-up control

Direction

Data bus

Serial I/O enable bit

Receive enable bit

Serial I/O input

Port latch

(4) Port P31

Serial I/O synchronous

clock selection bit

Data bus

Serial I/O clock output

Serial I/O clock input

Serial I/O mode selection bit

Serial I/O enable bit

Port latch

Direction

Serial I/O enable bit

Pull-up control

(2) Ports P04-P07, P1, P2

Segment output disable bit

Direction

Data bus

Port latch

VL2/VL3

VL1/VSS

Key input control

Key-on wakeup

interrupt input

Segment data

Segment output disable bit

Direction

Data bus

Port latch

LCD power input (VL1,VL2)

only for P26, P27

VL2/VL3

VL1/VSS

Segment data

Segment output disable bit

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