R5F21237KFP#U0 Renesas Electronics America, R5F21237KFP#U0 Datasheet - Page 371
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 16.45
16.3.6
Table 16.8
1 Tcyc = 1/f1(s)
When setting the I
Figure 16.45 shows the Timing of Bit Synchronous Circuit and Table 16.8 lists the Time between Changing
SCL Signal from “L” Output to High-Impedance and Monitoring of SCL Signal.
•
•
When the SCL signal is driven to “L” by the slave device.
Since the “H” period may become shorter while the SCL signal is driven to “L” by the slave device and the
rising speed of the SCL signal is lowered by the load (load capacity and pull-up resistor) of the SCL line,
the SCL signal is monitored and the communication synchronizes per bit.
Bit Synchronization Circuit
CKS3
0
1
Monitoring of SCL Signal
Timing of Bit Synchronous Circuit
Time between Changing SCL Signal from “L” Output to High-Impedance and
ICCR1 Register
Basis clock of SCL
2
C bus interface in master mode.
Page 349 of 501
monitor timing
Internal SCL
SCL
CKS2
0
1
0
1
VIH
Time for Monitoring SCL
16. Clock Synchronous Serial Interface
19.5 Tcyc
17.5 Tcyc
41.5 Tcyc
7.5 Tcyc
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