R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 440

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#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 ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Table 19.8
VCC,VSS
RESET
P4_6/XIN
P4_7/XOUT
P4_3/XCIN
P4_4/XCOUT
P0_0 to P0_7
P1_0 to P1_7
P2_0 to P2_7
P3_0, P3_1,
P3_3 to P3_5,
P3_7
P4_2/VREF,
P4_5
P6_0 to P6_7
MODE
Pin
Feb 29, 2008
Pin Functions (Flash Memory Standard Serial I/O Mode 3)
Power input
Reset input
P4_6 input/clock input
P4_7 input/clock output
P4_3 input/clock input
P4_4 input/clock output
Input port P0
Input port P1
Input port P2
Input port P3
Input port P4
Input port P6
MODE
Page 421 of 485
Name
I
I
I/O
I
I/O
I
I
I
I
I
I
I/O Serial data I/O pin. Connect to the flash programmer.
I/O
Apply the voltage guaranteed for programming and
erasure to the VCC pin and 0 V to the VSS pin.
Reset input pin.
Connect a ceramic resonator or crystal oscillator
between the XIN and XOUT pins when connecting
external oscillator. Apply “H” and “L” or leave the pin
open when using as input port.
Connect crystal oscillator between pins XCIN and
XCOUT when connecting external oscillator. Apply “H”
and “L” or leave the pin open when using as a port.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Description
19. Flash Memory