R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 244
![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 14.74
Feb 29, 2008
TRDGRBi register
TRDGRBi register
TRDSTR register
TRDSTR register
TRDSRi register
TRDSRi register
TRDSRi register
TRDSRi register
TRDIOBi output
TRDIOBi output
TSTARTi bit in
TSTARTi bit in
Operating Example of PWM Mode (Duty 0%, Duty 100%)
IMFA bit in
IMFB bit in
IMFA bit in
IMFB bit in
Value in TRDi register
Value in TRDi register
0000h
0000h
i = 0 or 1
The above applies under the following conditions:
The EBi bit in the TRDOER1 register is set to 0 (enable TRDIOBi output).
The POLB bit in the TRDPOCRi register is set to 0 (active level “L”).
Page 225 of 485
1
0
1
0
1
0
1
0
1
0
1
0
m
m
p
q
n
p
n
n
n
Rewrite by a program
Set to 0 by a program
m
Set to 0 by a program
Rewrite by a program
When compare matches with registers TRDGRAi and TRDGRBi are generated
simultaneously, the compare match with the TRDGRBi register has priority.
“L” is applied to the TRDIOBi output without any change.
Duty 100%
p (p>m)
Duty 0%
“L” is applied to TRDIOBi output at compare match
with the TRDGRBi register with no change.
p
m: Value set in TRDGRAi register
Since no compare match in the TRDGRBi register is
generated, “L” is not applied to the TRDIOBi output
Set to 0 by a program
Set to 0 by a program
q
14. Timers
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