upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 90

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

90
Cautions 6. When the TOE00 is 0, set the TOE00, LVS00, and LVR00 at the same time with the 8-bit
(4) Prescaler mode register 00 (PRM00)
This register is used to set the 16-bit timer counter 00 (TM00) count clock and the TI000, TI010 pin input valid
edges.
PRM00 is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets the value of PRM00 to 00H.
Remarks 1. f
Note The external clock requires a pulse longer than two cycles of the internal count clock (f
Cautions 1. Always set data to PRM00 after stopping the timer operation.
Address: FF61H After reset: 00H R/W
Symbol
PRM00
memory manipulation instruction. When the TOE00 is 1, the LVS00 and LVR00 can be set
with the 1-bit memory manipulation instruction.
2. ( ): f
2. If the valid edge of the TI000 pin is to be set as the count clock, do not set the clear/start
XP
mode and the capture trigger at the valid edge of the TI000 pin.
PRM001
ES110
ES110
ES010
: Oscillation frequency of clock supplied to peripheral hardware
7
0
0
1
1
0
0
1
1
0
0
1
1
XP
Figure 6-8. Format of Prescaler Mode Register 00 (PRM00)
= 10 MHz
PRM000
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
ES100
ES100
ES000
6
0
1
0
1
0
1
0
1
0
1
0
1
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
f
f
f
TI000 pin valid edge
XP
XP
XP
User’s Manual U16994EJ3V0UD
ES010
/2
/2
(10 MHz)
2
8
5
(2.5 MHz)
(39.06 kHz)
ES000
4
Note
TI010 pin valid edge selection
TI000 pin valid edge selection
Count clock selection
3
0
2
0
PRM001
1
XP
).
PRM000
0