M16C Datasheet, PDF (190/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C / 6N Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Programmable I/O Port
Pull-up control register 0
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR0
Address
03FC16
Bit symbol
PU00
PU01
PU02
PU03
PU04
PU05
PU06
PU07
Bit name
P00 to P03 pull-up
P04 to P07 pull-up
P10 to P13 pull-up
P14 to P17 pull-up
P20 to P23 pull-up
P24 to P27 pull-up
P30 to P33 pull-up
P34 to P37 pull-up
When reset
0016
Function
The corresponding port is pulled
high with a pull-up resistor
0 : Not pulled high
1 : Pulled high
RW
Pull-up control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR1
Address
03FD16
When reset
0016 (Note 2)
Bit symbol
PU10
PU11
PU12
PU13
Bit name
P40 to P43 pull-up
P44 to P47 pull-up
P50 to P53 pull-up
P54 to P57 pull-up
Function
The corresponding port is pulled
high with a pull-up resistor
0 : Not pulled high
1 : Pulled high
RW
PU14
P60 to P63 pull-up
PU15
P64 to P67 pull-up
PU16
P70 to P73 pull-up (Note 1)
PU17
P74 to P77 pull-up
Note 1: Since P70 is N-channel open drain port, pull-up is not available for it.
Note 2: When the VCC level is being impressed to the CNVSS terminal, this register becomes
to 0216 when reset (PU11 becomes to 1 ).
Pull-up control register 2
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR2
Address
03FE16
When reset
0016
Bit symbol
PU20
PU21
PU22
Bit name
Function
P80 to P83 pull-up
The corresponding port is pulled
P84 to P87 pull-up
(Except P85)
high with a pull-up resistor
0 : Not pulled high
1 : Pulled high
P90 to P93 pull-up (Note 3)
PU23
PU24
P94 to P97 pull-up
P100 to P103 pull-up
PU25
P104 to P107 pull-up
Nothing is assigned.
Theses bits can neither be set nor reset. When read, their contents are 0 .
Note 3: Since P91 is N-channel open drain port, pull-up is not available for it.
RW
Figure 19-8. Pull-up control register
190