R5F21257SDFP#U0 Renesas Electronics America, R5F21257SDFP#U0 Datasheet - Page 501
![IC R8C/25 MCU FLASH 52LQFP](/photos/12/37/123757/r5f21257sdfp_u0_sml.jpg)
R5F21257SDFP#U0
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21257SDFP#U0R5F21257SDFP#V0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
R5F21257SDFP#U0R5F21257SDFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/24 Group, R8C/25 Group Appendix 2. Connection Examples between Serial Writer and On-Chip Debugging
Rev.3.00
REJ09B0244-0300
Appendix 2. Connection Examples between Serial Writer and On-Chip
Appendix Figure 2.1 shows a Connection Example with M16C Flash Starter (M3A-0806), and Appendix Figure 2.2
shows a Connection Example with E8 Emulator (R0E000080KCE00).
Appendix Figure 2.1
Appendix Figure 2.2
VCC
Feb 29, 2008
4.7kΩ or more
TXD
(R0E000080KCE00)
RXD
VSS
14
12
10
8
6
4
2
E8 emulator
Debugging Emulator
RXD 4
TXD
M16C flash starter
10
MODE
(M3A-0806)
Connection Example with M16C Flash Starter (M3A-0806)
Connection Example with E8 Emulator (R0E000080KCE00)
13
RESET
7 MODE
Page 482 of 485
User logic
4.7kΩ ±10%
MODE
7 VSS
1 VCC
Open collector buffer
RESET
Connect oscillation
VSS
VCC
NOTE:
1. An oscillation circuit must be connected, even when
Connect oscillation
VSS
operating with the on-chip oscillator clock.
VCC
NOTE:
1. It is not necessary to connect an oscillation circuit
circuit
when operating with the on-chip oscillator clock.
(1)
circuit
(1)
10
11
12
13
1
2
3
4
5
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8
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10
11
12
13
1
2
3
4
5
6
7
8
9
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