UPD78F1233GB-GAH-AX Renesas Electronics America, UPD78F1233GB-GAH-AX Datasheet - Page 547

• Manufacturer Part Number: UPD78F1233GB-GAH-AX
• Description: MCU 16BIT 78K0R/LX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1233GB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Address: FFF9EH
(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.
When setting a value to the WALE bit while the counter operates (RTCE = 1) and WALIE = 1, rewrite the WALE bit
after disabling interrupt servicing INTRTC by using the interrupt mask flag register. Furthermore, clear the WAFG
and RTCIF flags after rewriting the WALE bit. When setting each alarm register (WALIE flag of RTCC1, the
ALARMWM register, the ALARMWH register, and the ALARMWW register), set match operation to be invalid (“0”)
for the WALE bit.
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.
This flag indicates the status of generation of the constant-period interrupt. When the constant-period interrupt is
generated, it is set to “1”.
This flag is cleared when “0” is written to it. Writing “1” to it is invalid.
This status flag indicates whether the setting of RWAIT is valid.
Before reading or writing the counter value, confirm that the value of this flag is 1.
WALIE
WAFG
RWST
WALE
WALE
RIFG
<7>
0
1
0
1
0
1
0
1
0
1
Figure 9-4. Format of Real-Time Counter Control Register 1 (RTCC1) (1/2)
After reset: 00H
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
Constant-period interrupt is not generated.
Constant-period interrupt is generated.
Counter is operating.
Mode to read or write counter value
WALIE
<6>
R/W
CHAPTER 9 REAL-TIME COUNTER
5
0
User’s Manual U19678EJ1V1UD
Control of alarm interrupt (INTRTC) function operation
WAFG
Constant-period interrupt status flag
Wait status flag of real-time counter
<4>
Alarm detection status flag
Alarm operation control
RIFG
<3>
2
0
RWST
<1>
RWAIT
<0>
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