R5F21257SDFP#U0 Renesas Electronics America, R5F21257SDFP#U0 Datasheet - Page 6

• Manufacturer Part Number: R5F21257SDFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SDFP#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: -40°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
1.3
Figure 1.1
Figure 1.1 shows a Block Diagram.
I/O ports
Block Diagram
Feb 29, 2008
Peripheral functions
Timer RA (8 bits)
Timer RB (8 bits)
Timer RD
Timer RE (8 bits)
(16 bits × 2 channels)
Block Diagram
Watchdog timer
(15 bits)
Timers
Page 4 of 51
Port P0
8
I
2
C bus interface or clock synchronous
R8C/Tiny Series CPU core
(10 bits
clock synchronous serial I/O
R0H
R1H
serial I/O with chip select
Port P1
(8 bits × 2 channels)
(8 bits × 1 channel)
A/D converter
R2
R3
LIN module
(1 channel)
FB
A0
A1
8
UART or
×
R0L
R1L
12 channels)
Port P2
8
INTB
PC
SB
NOTES:
USP
FLG
ISP
Port P3
1. ROM size varies with MCU type.
2. RAM size varies with MCU type.
High-speed on-chip oscillator
Low-speed on-chip oscillator
6
generation circuit
System clock
XCIN-XCOUT
XIN-XOUT
Memory
Port P4
3
Multiplier
3
ROM
RAM
(1)
(2)
Port P6
8
1. Overview