UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 226

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

8.3 Registers Controlling 8-Bit Timer/Event Counters 50 and 51
(1) Timer clock selection register 5n (TCL5n)
226
The following four registers are used to control 8-bit timer/event counters 50 and 51.
• Timer clock selection register 5n (TCL5n)
• 8-bit timer mode control register 5n (TMC5n)
• Port mode register 1 (PM1) or port mode register 3 (PM3)
• Port register 1 (P1) or port register 3 (P3)
Notes 1.
Cautions 1. When rewriting TCL50 to other data, stop the timer operation beforehand.
Remark f
This register sets the count clock of 8-bit timer/event counter 5n and the valid edge of the TI5n pin input.
TCL5n can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears TCL5n to 00H.
Address: FF6AH
Symbol
TCL50
Remark n = 0, 1
2.
2. Be sure to set bits 3 to 7 to 0.
PRS
In the on-board mode, the FLMD0 pin falling edge is selected.
In the on-board mode, the FLMD0 pin rising edge is selected.
: Peripheral hardware clock frequency
TCL502
7
0
0
0
0
0
1
1
1
1
After reset: 00H
Figure 8-5. Format of Timer Clock Selection Register 50 (TCL50)
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51
TCL501
6
0
0
0
1
1
0
0
1
1
R/W
TCL500
0
1
0
1
0
1
0
1
User’s Manual U17554EJ4V0UD
5
0
TI50 pin falling edge
TI50 pin rising edge
f
f
f
f
f
f
PRS
PRS
PRS
PRS
PRS
PRS
/2
/2
/2
/2
/2
4
0
2
6
8
13
4 MHz
2 MHz
1 MHz
62.5 kHz
15.62 kHz
0.48 kHz
f
PRS
MHz
3
0
= 4
Note 2
Note 1
Count clock selection
8 MHz
4 MHz
2 MHz
125 kHz
31.25 kHz
0.97 kHz
TCL502
f
PRS
MHz
2
= 8
10 MHz
5 MHz
2.5 MHz
156.25 kHz 312.5 kHz
39.06 kHz
1.22 kHz
f
TCL501
PRS
MHz
1
= 10
20 MHz
10 MHz
5 MHz
78.13 kHz
2.44 kHz
f
TCL500
PRS
MHz
0
= 20