R5F21274SDFP#U0 Renesas Electronics America, R5F21274SDFP#U0 Datasheet - Page 57

• Manufacturer Part Number: R5F21274SDFP#U0
• Description: IC R8C/27 MCU FLASH 32LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/27r

Specifications of R5F21274SDFP#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: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°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 6.6
Internal
reference
voltage
Voltage detection 2 circuit
Watchdog timer block
VCC
VW2C0 to VW2C3, VW2F0, VW2F1, VW2C6, VW2C7: Bits in VW2C register
VCA13: Bit in VCA1 register
VCA27: Bit in VCA2 register
VCA27
+
-
(Filter width: 200 ns)
Sep 26, 2008
Noise filter
Block Diagram of Voltage Monitor 2 Interrupt/Reset Generation Circuit
Watchdog timer
underflow signal
Voltage detection 2 signal
is held “H” when VCA27 bit
is set to 0 (disabled)
Page 38 of 453
fOCO-S
Voltage
detection
2 signal
VCA13
Voltage monitor 2 interrupt/reset generation circuit
This bit is set to 0 (not detected) by writing 0
by a program.
VW2C3
1/2
1/2
VW2F1 to VW2F0
1/2
VW2C7
= 00b
= 01b
= 10b
= 11b
VW2C1
Digital
filter
VW2C2 bit is set to 0 (not detected) by
writing 0 by a program.
When VCA27 bit is set to 0 (voltage
detection 2 circuit disabled), VW2C2
bit is set to 0
VW2C1
VW2C0
VW2C6
VW2C2
6. Voltage Detection Circuit
Voltage monitor 2
interrupt signal
Oscillation stop
timer interrupt
interrupt signal
Watchdog
detection
signal
Voltage monitor 2
reset signal
Non-maskable
interrupt signal