R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 88
![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
Table 7.44
NOTE:
Table 7.45
X: 0 or 1
NOTE:
Table 7.46
X: 0 or 1
NOTE:
Table 7.47
X: 0 or 1
NOTE:
Register
Register
Setting
Setting
Register
Register
Value
Value
Setting
Setting
1. Pulled up by setting the PU15 bit in the PUR1 register to 1.
Value
1. Pulled up by setting the PU15 bit in the PUR1 register to 1.
Value
1. Pulled up by setting the PU15 bit in the PUR1 register to 1.
1. Pulled up by setting the PU15 bit in the PUR1 register to 1.
Bit
Bit
Bit
Bit
Feb 29, 2008
PD6_6
PD6_5
PD6
PD6
PD6_7
0
1
0
X
X
X
0
1
0
Port P6_4
Port P6_5/CLK1
Port P6_6/INT2/TXD1
Port P6_7/INT3/RXD1
PD6
0
1
0
0
U1PINSEL
U1PINSEL
PMR
PMR
PD6_4
X
0
X
0
X
1
1
PD6
X
0
X
X
0
X
1
1
Page 69 of 485
0
1
U1PINSEL
PMR
SMD2
X
X
X
1
SMD2
0
X
0
X
X
0
1
1
1
0
1
1
1
X
X
X
X
X
0
Other than 001b
Other than 001b
U1MR
SMD1
SMD1
X
X
X
0
0
0
0
0
1
0
0
0
1
X
X
X
X
X
0
Input port
Output port
INT3EN
INTEN
U1MR
X
X
X
1
SMD0
X
X
X
0
0
1
0
1
0
1
0
1
0
SMD0
(1)
X
X
X
X
X
1
Input port
Output port
INT3 input
RXD1 input
U1C0
NCH
X
X
X
0
1
CKDIR
X
X
X
1
0
1
0
(1)
INT2EN
INTEN
Input port
Output port
CLK1 (external clock) input
CLK1 (internal clock) output
X
X
X
X
1
Function
Input port
Output port
INT2 input
TXD1 output (CMOS output)
TXD1 output (N-channel open-drain output)
(1)
Function
(1)
Function
7. Programmable I/O Ports
Function
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