UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 343

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Address: FF9EH
(3) Real-time counter control register 1 (RTCC1)
RTCC1
Symbol
The RTCC1 register is an 8-bit register that is used to control the alarm interrupt function and the wait time of
the counter.
RTCC1 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
To set the registers of alarm (WALIE flag of RTCC1, ALARMWM register, ALARMWH register, and ALARMWW
register), disable WALE (clear it to “0”).
This is a status flag that indicates detection of matching with the alarm. It is valid only when WALE = 1 and is set to
“1” one clock (32.768 kHz) after matching of the alarm is detected. This flag is cleared when “0” is written to it.
Writing “1” to it is invalid.
WALIE
WAFG
WALE
WALE
<7>
Figure 10-4. Format of Real-Time Counter Control Register 1 (RTCC1) (1/2)
After reset: 00H
0
1
0
1
0
1
Match operation is invalid.
Match operation is valid.
Does not generate interrupt on matching of alarm.
Generates interrupt on matching of alarm.
Alarm mismatch
Detection of matching of alarm
WALIE
<6>
R/W
CHAPTER 10 REAL-TIME COUNTER
Preliminary User’s Manual U19111EJ2V1UD
5
0
Control of alarm interrupt (INTRTC) function operation
WAFG
<4>
Alarm detection status flag
Alarm operation control
RIFG
<3>
2
0
RWST
<1>
RWAIT
<0>
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