R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 13

• 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
REJ03B0117-0300
1.6
Table 1.5
I: Input
Power supply input VCC, VSS
Analog power
supply input
Reset input
MODE
XIN clock input
XIN clock output
XCIN clock input
XCIN clock output
INT interrupt input
Key input interrupt
Timer RA
Timer RB
Timer RD
Timer RE
Serial interface
I
Clock synchronous
serial I/O with chip
select
Reference voltage
input
A/D converter
I/O port
Input port
2
Table 1.5 lists Pin Functions.
C bus interface
Type
Pin Functions
Feb 29, 2008
O: Output
Pin Functions
AVCC, AVSS
RESET
MODE
XIN
XOUT
XCIN
XCOUT
INT0 to INT3
KI0 to KI3
TRAIO
TRAO
TRBO
TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
TRDCLK
TREO
CLK0, CLK1
RXD0, RXD1
TXD0, TXD1
SCL
SDA
SSI
SCS
SSCK
SSO
VREF
AN0 to AN11
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_3 to P4_5,
P6_0 to P6_7
P4_2, P4_6, P4_7
Page 11 of 51
Symbol
I/O: Input and output
I/O Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
Apply 2.2 V to 5.5 V to the VCC pin. Apply 0 V to the VSS pin.
Power supply for the A/D converter.
Connect a capacitor between AVCC and AVSS.
Input “L” on this pin resets the MCU.
Connect this pin to VCC via a resistor.
Connect a ceramic resonator or a crystal oscillator between
the XIN and XOUT pins. To use an external clock, input it to
the XIN pin and leave the XOUT pin open.
These pins are provided for XCIN clock generation circuit I/O.
Connect a crystal oscillator between the XCIN and XCOUT
pins. To use an external clock, input it to the XCIN pin and
leave the XCOUT pin open.
INT interrupt input pins.
INT0 is timer RD input pin. INT1 is timer RA input pin.
Key input interrupt input pins
Timer RA output pin
Timer RB output pin
Timer RD I/O ports
External clock input pin
Divided clock output pin
Transfer clock I/O pin
Serial data input pins
Serial data output pins
Clock I/O pin
Data I/O pin
Data I/O pin
Chip-select signal I/O pin
Clock I/O pin
Data I/O pin
Reference voltage input pin to A/D converter
Analog input pins to A/D converter
CMOS I/O ports. Each port has an I/O select direction
register, allowing each pin in the port to be directed for input
or output individually.
Any port set to input can be set to use a pull-up resistor or not
by a program.
P2_0 to P2_7 also function as LED drive ports.
Input-only ports
These pins are provided for XIN clock generation circuit I/O.
Timer RA I/O pin
Description
1. Overview