UPD78F1000GB-GAF-AX Renesas Electronics America, UPD78F1000GB-GAF-AX Datasheet - Page 501

• Manufacturer Part Number: UPD78F1000GB-GAF-AX
• Description: MCU 16BIT 78K0R/KX3-L 44-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3-Lr

Specifications of UPD78F1000GB-GAF-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Kx3-L
R01UH0106EJ0300 Rev.3.00
Oct 01, 2010
Address: FFF93H
Address: FFF94H
(7) Minute count register (MIN)
(8) Hour count register (HOUR)
Symbol
Symbol
HOUR
MIN
The MIN register is an 8-bit register that takes a value of 0 to 59 (decimal) and indicates the count value of minutes.
It counts up when the second 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 second 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 59 to this register in BCD code. If a value outside the range
is set, the register value returns to the normal value after 1 period.
The MIN register can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
The HOUR register is an 8-bit register that takes a value of 00 to 23 or 01 to 12 and 21 to 32 (decimal) and
indicates the count value of hours.
It counts up when the minute 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 minute count register overflows while this register is being written, this register ignores the overflow and
is set to the value written. Specify a decimal value of 00 to 23, 01 to 12, or 21 to 32 by using BCD code according
to the time system specified using bit 3 (AMPM) of real-time counter control register 0 (RTCC0).
If the AMPM bit value is changed, the values of the HOUR register change according to the specified time system.
If a value outside the range is set, the register value returns to the normal value after 1 period.
The HOUR register can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 12H.
However, the value of this register is 00H if the AMPM bit (bit 3 of the RTCC0 register) is set to 1 after reset.
Caution Bit 5 (HOUR20) of the HOUR register indicates AM(0)/PM(1) if AMPM = 0 (if the 12-hour system is
selected).
7
0
7
0
After reset: 00H
After reset: 12H
MIN40
6
6
0
Figure 9-9. Format of Hour Count Register (HOUR)
Figure 9-8. Format of Minute Count Register (MIN)
R/W
R/W
HOUR20
MIN20
5
5
HOUR10
MIN10
4
4
HOUR8
MIN8
3
3
CHAPTER 9 REAL-TIME COUNTER
HOUR4
MIN4
2
2
HOUR2
MIN2
1
1
HOUR1
MIN1
0
0
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