M16C6K9 Datasheet, PDF (236/292 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6K9 Group
Port
Port control register 0
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PCR0
Address
03FF16
Bit Symbol
Bit name
PCR00
Port P1 control register
When reset
0016
Function
RW
0 : When input port, read port
input level. When output port,
read the contents of port P1 register
1 : Read the contents of port P1
register though input/output port.
Nothing is assigned.
Can't write to this bit. The value, if read, turns out to be “0”.
Port control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PCR1
Address
02FE16
When reset
0016
Bit Symbol
PCR10
PCR11
PCR12
PCR13
PCR14
PCR15
PCR16
PCR17
Bit name
Function
Output type selection bit 0 : CMOS
(P00 to P03)
1 : N-channel open drain
Output type selection bit 0 : CMOS
(P04 to P07)
1 : N-channel open drain
Output type selection bit 0 : CMOS
(P10 to P13)
1 : N-channel open drain
Output type selection bit 0 : CMOS
(P14 to P17)
1 : N-channel open drain
Output type selection bit 0 : CMOS
(P40 to P46)
1 : N-channel open drain
Output type selection bit 0 : CMOS
(P110 to P113)
1 : N-channel open drain
Output type selection bit
(P114 to P117)
P40,P43 output
clear function selection bit
0 : CMOS
1 : N-channel open drain
0 : Cleared by software only
1 : Cleared by software or when
output buffer is read by host side.
RW
Fig.UA-12 Port control register 0, 1
Rev.1.00 Jun 06, 2003 page 236 of 290