upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 384

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

(1) Function of P10 pins
(2) Control registers
384
Port 10 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the
port 10 mode register (PM10).
In output mode, the values set to each bit are output to port 10 (P10). The port 10 function register (PF10) can be
used to specify whether outputs are normal outputs or N-ch open-drain outputs.
When using this port in input mode, the pin statuses can be read by reading P10. Also, the P10 (output latch)
values can be read by reading P10 while in output mode.
A pull-up resistor can be connected in 1-bit units when specified via pull-up resistor option register 10 (PU10).
When using the alternate-function A5 to A12 pins, set the pin functions via the memory address output mode
register (MAM). At this time, be sure to set PM10 to 0.
When using alternate-function pins as outputs, the ORed result of the port output and the alternate-function pin is
output from the pins.
When a reset is input, the settings are initialized to input mode.
Caution When using port 10 as a real-time output port, set in accordance with 13. 5 Usage.
(a) Port 10 mode register (PM10)
After reset:
PM10
PM10 can be read/written in 1-bit or 8-bit units.
FFH
PM107
PM10n
7
0
1
R/W
Output mode
Input mode
PM106
6
PM105
CHAPTER 14 PORT FUNCTION
5
User’s Manual U12768EJ4V1UD
Address: FFFFF034H
PM104
4
Control of I/O Mode (n = 0 to 7)
PM103
3
PM102
2
PM101
1
PM100
0