UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 264

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

9.3 Registers Controlling Real-Time Counter
264
Address: FF54H
(1) Real-time counter clock selection register (RTCCL)
(2) Real-time counter control register 0 (RTCC0)
Timer real-time counter is controlled by the following 16 registers.
RTCCL
Symbol
RTCCL can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
The RTCC0 register is an 8-bit register that is used to start or stop the real-time counter operation, control the
RTCCL and RTC1HZ pins, and set a 12- or 24-hour system and the constant-period interrupt function.
RTCC0 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
This register controls the mode of real-time counter.
Remark • When f
RTCCL1
After reset: 00H
Figure 9-2. Format of Real-time Counter Clock Selection Register (RTCCL)
0
0
1
1
7
0
• When f
RTCCL0
PRS
PRS
6
0
0
1
0
1
= 4.19 MHz, f
= 8.38 MHz, f
R/W
f
f
f
Setting prohibited
SUB
PRS
PRS
CHAPTER 9 REAL-TIME COUNTER
/2
/2
5
0
7
8
User’s Manual U18698EJ1V0UD
RTC
RTC
= f
= f
PRS
PRS
/2
/2
Control of real-time counter (RTC) input clock (f
7
8
4
0
= 32.768 kHz
= 32.768 kHz
3
0
2
0
RTCCL1
<1>
RTC
)
RTCCL0
<0>