R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 6
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R5F21257SNFP#U0
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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