UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 120

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

118
PRM01
Notes 1. Expanded-specification products only
Cautions 1. If the valid edge of TI001 is set for the count clock, do not set it for the clear and start mode
Remarks 1. f
Symbol
2. The external clock requires a pulse longer than two internal clocks (f
ES111 ES110
ES011 ES010
PRM011 PRM010
ES111
0
0
1
1
0
0
1
1
0
0
1
1
2. TI001, TI011: Input pins of 16-bit timer/event counter 01
2. PRM01 should be set only after timer operation has been stopped.
3. If the TI001 pin or TI011 pin is high level immediately after system reset, and the rising edge
7
X
or the capture trigger. Also, the P56/TI001/TO01/INTP6 pin cannot be used as a timer output
(TO01).
or both edges are specified as the valid edge of the TI001 pin or TI011 pin thus enabling
operation of 16-bit timer counter 01 (TM01), the rising edge will be detected immediately.
Care is therefore needed if the TI001 pin or TI011 pin is pulled up. When operation is enabled
again after being stopped, the rising edge cannot be detected.
: System clock oscillation frequency
ES110
0
1
0
1
0
1
0
1
0
1
0
1
6
Rising edge
Both falling and rising edges
Rising edge
Both falling and rising edges
fx/2
TI001 valid edge
Falling edge
Setting prohibited
Falling edge
Setting prohibited
fx
fx/2
Figure 6-10. Format of Prescaler Mode Register 01
ES011
2
5
5
12 MHz
3 MHz
375 kHz
CHAPTER 6 16-BIT TIMER/EVENT COUNTER
At f
ES010
TI011 valid edge selection
TI001 valid edge selection
X
4
Note 2
= 12 MHz
Count clock selection
User’s Manual U13029EJ7V1UD
3
0
Note 1
2
0
8.38 MHz
2.09 MHz
262 kHz
At f
PRM011 PRM010
X
= 8.38 MHz
1
0
Address
FF61H
X
/2
4
).
After reset
00H
R/W
R/W