M16C65 Datasheet, PDF (241/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
13.3.2 Pull-Up Control Register 1 (PUR1)
13. Programmable I/O Ports
Pull-Up Control Register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR1
Address
0361h
Bit Symbol
Bit Name
PU10
PU11
PU12
PU13
PU14
PU15
PU16
PU17
P4_0 to P4_3 pull-up
P4_4 to P4_7 pull-up
P5_0 to P5_3 pull-up
P5_4 to P5_7 pull-up
P6_0 to P6_3 pull-up
P6_4 to P6_7 pull-up
P7_2 to P7_3 pull-up
P7_4 to P7_7 pull-up
Function
0 : Not pulled high
1 : Pulled high
After Reset
0000 0000b
0000 0010b
RW
RW
RW
RW
RW
RW
RW
RW
RW
Values after hardware reset, power-on reset, or voltage monitor 0 reset are as follows:
• 00000000b when input on the CNVSS pin is low
• 00000010b when input on the CNVSS pin is high
Values after voltage monitor 1 reset, voltage monitor 2 reset, software reset, watchdog timer reset, ro
oscillation stop detection reset are as follows:
• 00000000b when bits PM01 to PM00 are 00b (single-chip mode)
• 00000010b when bits PM01 to PM00 are 01b (memory expansion mode) or 11b (microprocessor
mode)
PU10 (P4_0 to P4_3 Pull-Up) (b0)
PU11 (P4_4 to P4_7 Pull-Up) (b1)
PU12 (P5_0 to P5_3 Pull-Up) (b2)
PU13 (P5_4 to P5_7 Pull-Up) (b3)
The pin for which the bit in the PU1i bit (i = 0 to 3) is 1 (pulled high) and the direction bit is 0 (input
mode) is pulled high.
In memory expansion and microprocessor modes, pins are not pulled high although the contents of
these bits can be modified.
PU14 (P6_0 to P6_3 Pull-Up) (b4)
PU15 (P6_4 to P6_7 Pull-Up) (b5)
PU17 (P7_4 to P7_7 Pull-Up) (b7)
The pin for which the bit in the PU1i bit (i = 4, 5, 7) is 1 (pulled high) and the direction bit is 0 (input
mode) is pulled high.
PU16 (P7_2 to P7_3 Pull-Up) (b6)
The pin for which the bit in the PU16 bit is 1 (pulled high) and the direction bit is 0 (input mode) is pulled
high.
Pins P7_0 and P7_1 are not pulled high.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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