R5F21237KFP#U0 Renesas Electronics America, R5F21237KFP#U0 Datasheet - Page 58
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 6.1
Figure 6.2
VCC
Internal
reference
voltage
Voltage detection 1 circuit
VCC
VW1C0 to VW1C1, VW1F0 to VW1F1, VW1C6, VW1C7: Bits in VW1C register
VCA26: Bit in VCA2 register
VCA26
+
-
Block Diagram of Voltage Monitor 1 Reset Generation Circuit
Block Diagram of Voltage Detection Circuit
Voltage detection 1
signal is held “H” when
VCA26 bit is set to “0”
(disabled)
Internal
reference
voltage
Page 36 of 501
fOCO-S
Voltage
detection 1
signal
VCA27
VCA26
+
+
-
-
Voltage monitor 1 reset generation circuit
≥ Vdet2
≥ Vdet1
1/2
1/2
VW1C7
VW1F1 to VW1F0
1/2
VW1C1
= 00b
= 01b
= 11b
= 10b
Noise filter
Digital
filter
VW1C1
VW1C0
6. Voltage Detection Circuit
VW1C6
VCA1 register
Voltage detection 2
signal
Voltage detection 1
signal
VCA13 bit
b3
Voltage
monitor 1
reset signal
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