R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 213
![MCU 2KB FLASH 48K 52-LQFP](/photos/28/61/286101/52-lqfp_sml.jpg)
R5F21257SYFP#U0
Manufacturer Part Number
R5F21257SYFP#U0
Description
MCU 2KB FLASH 48K 52-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Specifications of R5F21257SYFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
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)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 105°C
Package / Case
52-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 14.44
The above applies under the following conditions:
Bits CCLR2 to CCLR0 in the TRDCRi register are set to 001b. (the TRDi register set to 0000h by TRDGRAi register input capture).
Bits TCK2 to TCK0 in the TRDCRi register are set to 101b (TRDCLK input for the count source).
Bits CKEG1 to CKEG0 in the TRDCRi register are set to 01b (count at the falling edge for the count source).
Bits IOA2 to IOA0 in the TRDIORAi register are set to 101b (input capture at the falling edge of the TRDIOAi input).
The BFCi bit in the TRDMR register is set to 1 (the TRDGRCi register is used as the buffer register of the TRDGRAi register).
i = 0 or 1
TRDGRCi register
TRDGRAi register
TRDSTR register
TRDSRi register
TRDSRi register
TSTARTi bit in
TRDIOAi input
TRDCLK input
IMFA bit in
OVF bit in
count source
Feb 29, 2008
in TRDi register
Count value
Operating Example of Input Capture Function
FFFFh
0009h
0006h
0000h
1
0
1
0
1
0
Page 194 of 485
65536
Set to 0 by a program
Transfer
0006h
Transfer
0009h
0006h
14. Timers
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