upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 135

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(5) Port mode register 0 (PM0)
Cautions 4. If the TI000 or TI010 pin is high level immediately after system reset, the rising edge is
Remarks 1. f
This register sets port 0 input/output in 1-bit units.
When using the P01/TO00/TI010 pin for timer output, clear PM01 and the output latch of P01 to 0.
When using the P01/TO00/TI010 pin for timer input, clear PM01 to 1. At this time, the output latch of P01 may be
0 or 1.
PM0 can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM0 to FFH.
2. Figures in parentheses are for operation with f
5. When the valid edge of the TI010 pin is used, P01 cannot be used as the timer output pin
X
immediately detected after the rising edge or both the rising and falling edges are set as the
valid edge(s) of the TI000 pin or TI010 pin to enable the operation of 16-bit timer counter 00
(TM00). Care is therefore required when pulling up the TI000 or TI010 pin. However, when re-
enabling operation after the operation has been stopped, the rising edge is not detected if the
TI000 or TI010 pin is the high level.
(TO00). When P01 is used as the TO00 pin, the valid edge of the TI010 pin cannot be used.
: High-speed system clock oscillation frequency
Address: FF20H
Symbol
Figure 6-9. Format of Port Mode Register 0 (PM0)
PM0
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
PM0n
7
1
0
1
Output mode (output buffer on)
Input mode (output buffer off)
User’s Manual U16961EJ4V0UD
6
1
After reset: FFH
P0n pin I/O mode selection (n = 0, 1)
5
1
4
1
X
= 10 MHz.
R/W
3
1
2
1
PM01
1
PM00
0
135