M37517F8HP Datasheet, PDF (9/98 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7517 Group
(9) Port P22
I²C-BUS interface enable bit
SDA/SCL pin selection bit
Direction
register
Data bus
Port latch
SDA output
(11) Port P24
I²C-BUS interface enable bit
SDA/SCL pin selection bit
Serial I/O1 enable bit
Receive enable bit
Data bus
Direction
register
Port latch
SDA input
SDA output
SDA input
Serial I/O1 input
(13) Port P26
Serial I/O1 synchronous clock
selection bit
Serial I/O1 enable bit
Serial I/O1 mode selection bit
Serial I/O1 enable bit
Direction
register
Data bus
Port latch
Serial I/O1 clock output
Serial I/O1 external
clock input
(15) Port P40
Direction
register
Data bus
Port latch
Pulse output mode
Timer output
CNTR1 interrupt input
Fig. 7 Port block diagram (2)
(10) Port P23
I²C-BUS interface enable bit
SDA/SCL pin selection bit
Direction
register
Data bus
Port latch
SCL output
SCL input
(12) Port P25
P-channel output disable bit
Serial I/O1 enable bit
Transmit enable bit
I²C-BUS interface enable bit
SDA/SCL pin selection bit
Direction
register
Data bus
Port latch
Serial I/O1 output
SCL output
(14) Port P27
Pulse output mode
Serial I/O1 mode selection bit
Serial I/O1 enable bit
SRDY1 output enable bit
Direction
register
Data bus
Port latch
Pulse output mode
Serial I/O1 ready
output
Timer output
(16) Ports P41, P42
Data bus
Direction
register
Port latch
SCL input
CNTR0 interrupt
input
Interrupt input
Rev.1.01 Aug 02, 2004 page 9 of 96