UPD78F0138 NEC, UPD78F0138 Datasheet - Page 178

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

178
Remark 0/1: Setting 0 or 1 allows another function to be used simultaneously with square-wave output. See the
TOC0n
PRM0n
TM0n count value
Remark n = 0:
TO0n pin output
Count clock
INTTM00n
ES1n1
0/1
7
0
CR00n
n = 0:
n = 0, 1:
n = 0, 1:
OSPT0n
ES1n0
description of the respective control registers for details.
0/1
0
Figure 6-34. Control Register Settings in Square-Wave Output Mode (2/2)
µ
µ
0000H 0001H 0002H
OSPE0n
ES0n1
PD780131, 780132
PD780133, 780134, 78F0134, 780136, 780138, 78F0138
µ
µ
0/1
0
PD780131, 780132
PD780133, 780134, 78F0134, 780136, 780138, 78F0138
CHAPTER 6 16-BIT TIMER/EVENT COUNTERS 00 AND 01
TOC0n4
ES0n0
Figure 6-35. Square-Wave Output Operation Timing
0/1
0
(c) 16-bit timer output control register 0n (TOC0n)
N
LVS0n
0/1
(d) Prescaler mode register 0n (PRM0n)
3
0
LVR0n
0/1
2
0
User’s Manual U16228EJ2V0UD
TOC0n1
PRM0n1
1
0/1
N – 1
TOE0n
PRM0n0
1
0/1
N
Enables TO0n output.
Inverts output on match between TM0n and CR00n.
Specifies initial value of TO0n output F/F (setting “11” is prohibited).
Does not invert output on match between TM0n and CR01n.
Disables one-shot pulse output.
Selects count clock.
Setting invalid (setting “10” is prohibited.)
Setting invalid (setting “10” is prohibited.)
0000H 0001H 0002H
N – 1
N
0000H