UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 255

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

<R>
<R>
Notes 1.
Cautions 1. When rewriting TCL51 to other data, stop the timer operation beforehand.
Remark f
Address: FF8CH
Symbol
TCL51
2.
2. Be sure to clear bits 3 to 7 to “0”.
PRS
If the peripheral hardware clock (f
f
• V
• V
• V
If the peripheral hardware clock (f
= 0), when 1.8 V ≤ V
prohibited.
PRS
: Peripheral hardware clock frequency
DD
DD
DD
TCL512
operating frequency varies depending on the supply voltage.
= 4.0 to 5.5 V: f
= 2.7 to 4.0 V: f
= 1.8 to 2.7 V: f
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
DD
PRS
PRS
PRS
< 2.7 V, the setting of TCL512, TCL511, TCL510 = 0, 1, 0 (count clock: f
≤ 20 MHz
≤ 10 MHz
≤ 5 MHz (Standard and (A) grade products only)
R/W
TCL510
User’s Manual U17260EJ6V0UD
5
0
0
1
0
1
0
1
0
1
PRS
PRS
) operates on the internal high-speed oscillation clock (f
) operates on the high-speed system clock (f
TI51 pin falling edge
TI51 pin rising edge
f
f
f
f
f
f
PRS
PRS
PRS
PRS
PRS
PRS
Note 2
/2
/2
/2
/2
/2
4
0
4
6
8
12
2 MHz
1 MHz
125 kHz
31.25 kHz
7.81 kHz
0.49 kHz
2 MHz
f
PRS
3
0
Count clock selection
=
5 MHz
2.5 MHz
312.5 kHz
78.13 kHz
19.53 kHz
1.22 kHz
TCL512
5 MHz
f
PRS
2
=
10 MHz
5 MHz
625 kHz
156.25 kHz 312.5 kHz
39.06 kHz
2.44 kHz
Note 1
TCL511
10 MHz
f
PRS
1
=
XH
) (XSEL = 1), the
20 MHz
10 MHz
1.25 MHz
78.13 kHz
4.88 kHz
TCL510
20 MHz
f
PRS
0
RH
=
) (XSEL
PRS
255
) is