R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 70

• Manufacturer Part Number: R5F21272SNFP#U0
• Description: IC R8C/27 MCU FLASH 32LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/27r

Specifications of R5F21272SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 25
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 6.16
When the VW2C1 bit is set
to 0 (digital filter enabled)
When the VW2C1 bit is
set to 1 (digital filter
disabled) and the
VW2C7 bit is set to 0
(Vdet2 or above)
When the VW2C1 bit is
set to 1 (digital filter
disabled) and the
VW2C7 bit is set to 1
(Vdet2 or below)
VCA13: Bit in VCA1 register
VW2C1, VW2C2, VW2C6, VW2C7: Bits in VW2C register
Sep 26, 2008
Example of Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset Operation
VCA13 bit
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
Internal reset signal
(VW2C6 = 1)
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
Internal reset signal
(VW2C6 = 1)
The above applies under the following conditions.
NOTE:
• VCA27 bit in VCA2 register = 1 (voltage detection 2 circuit enabled)
• VW2C0 bit in VW2C register = 1 (voltage monitor 2 interrupt and voltage monitor 2 reset enabled)
1. When voltage monitor 0 reset is not used, set the power supply to VCC ≥ 2.2.
Page 51 of 453
2.2 V
Vdet2
(1)
VCC
1
0
1
0
1
0
1
0
4 cycles of sampling clock of digital filter
Set to 0 by interrupt
request acknowledgement
Set to 0 by a program
Set to 0 by interrupt request
acknowledgement
Set to 0 by a program
4 cycles of sampling clock of digital filter
6. Voltage Detection Circuit
Set to 0 by a program
Set to 0 by interrupt
request
acknowledgement