UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 396

• Manufacturer Part Number: UPD78F0551MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0551MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2-L
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
Address: FFB7H
Address: FFB8H
MONTH
(11) Month count register (MONTH)
(12) Year count register (YEAR)
Symbol
Symbol
YEAR
The MONTH register is an 8-bit register that takes a value of 1 to 12 (decimal) and indicates the count value of
months.
It counts up when the day counter overflows.
When data is written to this register, it is written to a buffer and then to the counter up to 2 clocks (32.768 kHz)
later. Even if the day count register overflows while this register is being written, this register ignores the overflow
and is set to the value written. Set a decimal value of 01 to 12 to this register in BCD code. If a value outside this
range is set, the register value returns to the normal value after 1 period.
MONTH can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 01H.
The YEAR register is an 8-bit register that takes a value of 0 to 99 (decimal) and indicates the count value of years.
It counts up when the month counter overflows.
Values 00, 04, 08, …, 92, and 96 indicate a leap year.
When data is written to this register, it is written to a buffer and then to the counter up to 2 clocks (32.768 kHz)
later. Even if the month count register overflows while this register is being written, this register ignores the
overflow and is set to the value written. Set a decimal value of 00 to 99 to this register in BCD code. If a value
outside this range is set, the register value returns to the normal value after 1 period.
YEAR can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
YEAR80
After reset: 01H
After reset: 00H
7
0
7
YEAR40
Figure 10-12. Format of Month Count Register (MONTH)
6
0
6
Figure 10-13. Format of Year Count Register (YEAR)
R/W
R/W
YEAR20
5
0
5
MONTH10
YEAR10
4
4
MONTH8
YEAR8
3
3
CHAPTER 10 REAL-TIME COUNTER
MONTH4
YEAR4
2
2
MONTH2
YEAR2
1
1
MONTH1
YEAR1
0
0
382