upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 388

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(1) Function of P11 pins
(2) Control registers
388
After reset:
PU11
Port 11 is a 5-bit (total) port that includes P114, which is an input-only port, and P110 to P113, which comprise an
I/O port for which I/O settings can be controlled in 1-bit units.
In output mode, the values set to each bit (bit 0 to bit 3) are output to port 11 (P11).
When using this port in input mode, the pin statuses can be read by reading P11. Also, the P11 (output latch)
values can be read by reading P11 while in output mode (bit 0 to bit 3 only).
A pull-up resistor can be connected in 1-bit units for P110 to P113 when specified via pull-up resistor option
register 11 (PU11).
When using the alternate-function A1 to A4 pins, set the pin functions via the memory address output mode
register (MAM). At this time, be sure to set PM11 (PM110 to PM113) to 0.
When a reset is input, the settings are initialized to input mode.
Caution Because the P114/XT1 pin is internally connected to the XT2 pin via a circuit, the P114/XT1 and
(a) Port 11 mode register (PM11)
After reset:
PM11
(b) Pull-up resistor option register 11 (PU11)
PM11 can be read/written in 1-bit or 8-bit units.
PU11 can be read/written in 1-bit or 8-bit units.
XT2 pins will interfere with each other, even when the subclock is not being used. Therefore,
leave the XT2 pin open when not using the subclock.
00H
1FH
PU11n
7
0
1
0
PM11n
7
0
0
1
R/W
Do not connect
Connect
R/W
Output mode
Input mode
6
0
6
0
CHAPTER 14 PORT FUNCTION
Control of On-Chip Pull-Up Resistor Connection (n = 0 to 3)
User’s Manual U12768EJ4V1UD
5
0
5
0
Address: FFFFF096H
Address: FFFFF036H
4
0
Control of I/O Mode (n = 0 to 3)
4
1
PU113
PM113
3
3
PU112
PM112
2
2
PM111
PU111
1
1
PM110
PU110
0
0