UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 227

• 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

Cautions 1. When rewriting TCL51 to other data, stop the timer operation beforehand.
Remark f
Address: FF8CH
Symbol
TCL51
2. Be sure to set bits 3 to 7 to 0.
PRS
: Peripheral hardware clock frequency
TCL512
7
0
0
0
0
0
1
1
1
1
After reset: 00H
Figure 8-6. Format of Timer Clock Selection Register 51 (TCL51)
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51
TCL511
6
0
0
0
1
1
0
0
1
1
R/W
TCL510
User’s Manual U17554EJ4V0UD
5
0
0
1
0
1
0
1
0
1
TI51 pin falling edge
TI51 pin rising edge
f
f
f
f
f
f
PRS
PRS
PRS
PRS
PRS
PRS
/2
/2
/2
/2
/2
4
0
4
6
8
12
4 MHz
2 MHz
500 kHz
62.5 kHz
15.62 kHz
0.97 kHz
f
PRS
MHz
3
0
= 4
Count clock selection
8 MHz
4 MHz
1 MHz
125 kHz
31.25 kHz
1.95 kHz
TCL512
f
PRS
MHz
2
= 8
10 MHz
5 MHz
625 kHz
156.25 kHz 312.5 kHz
39.06 kHz
2.44 kHz
f
TCL511
PRS
MHz
1
= 10
78.13 kHz
4.88 kHz
20 MHz
10 MHz
1.25 MHz
f
TCL510
PRS
MHz
0
= 20
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