R5F21237KFP#U0 Renesas Electronics America, R5F21237KFP#U0 Datasheet - Page 59
R5F21237KFP#U0
Manufacturer Part Number
R5F21237KFP#U0
Description
IC R8C/23 MCU FLASH 48LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/23r
Datasheet
1.R5F21237DFPU0.pdf
(551 pages)
Specifications of R5F21237KFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
16MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
For Use With
RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21237KFP#U0R5F21237KFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 6.3
Internal
reference
voltage
Watchdog timer block
Voltage detection 2 circuit
VCC
VW2C0 to VW2C3, VW2F2, VW2F1, VW2C6, VW2C7: Bits in VW2C register
VCA13: Bit in VCA1 register
VCA27: Bit in VCA2 register
VCA27
+
-
(Filter width: 200ns)
Noise filter
Block Diagram of Voltage Monitor 2 Interrupt/Reset Generation Circuit
Voltage detection 2 signal
is held “H” when VCA27 bit
is set to 0 (disabled)
Watchdog timer underflow
signal
Page 37 of 501
fOCO-S
Voltage
detection
2 signal
VCA13
Voltage monitor 2 interrupt/reset generation circuit
VW2C3
This bit is set to 0 (not detected) by writing
“0” by program.
1/2
1/2
VW2C7
VW2F1 to VW2F0
1/2
VW2C1
= 00b
= 01b
= 10b
= 11b
Digital
filter
VW2C1
VW2C2 bit is set to 0 (not detected) by
writing 0 by program.
When VCA27 bit is set to 0 (voltage
detection 2 circuit disabled), VW2C2
bit is set to 0
VW2C0
VW2C6
VW2C2
6. Voltage Detection Circuit
Watchdog timer
Voltage monitor 2
interrupt signal
Oscillation stop
interrupt signal
interrupt signal
detection
Non-maskable
interrupt signal
Voltage
monitor 2
reset signal
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