R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 55

• 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: -

Rev.
0.10
0.20
0.30
REVISION HISTORY
Sep 01, 2005
Feb 24, 2005
Mar 8, 2005
Date
13, 14
1 to 3
5 to 7
Page
5, 6
2, 3
2, 3
5, 6
15
17
19
20
15
8
9
8
4
Pin type changed: 48-pin(under consideration) → 52-pin.
Package type revised: 48-pin LQFP (under consideration) →
PLQP0052JA-A
Table 1.5 TCLK added, VREF revised.
Table 1.6 revised.
Figures 3.1 and 3.2 part number revised.
Tabel 4.1 revised:
- 000Fh: 000XXXXXb → 00011111b
- 0023h: FR0 → FRA0
- 0024h: FR1 → FRA1
- 0025h: FR2 → FRA2
- 0031h: Voltage Detection A Register 1, VC1
- 0032h: Voltage Detection A Register 2, VC2
Tabel 4.3 Register name and the value after reset at 00B8h to 00BFh
revised; NOTE2 added.
Tabel 4.5 revised:
- 0107h: LINSR → LINST
- 0137h to 013Fh: Register symbol revised
Tabel 4.6 revised:
- 0140h to 015Fh: Register symbol revised
- 0158h, 0159h: Timer RD General Register → Timer RD General Register
A1
Tables 1.1, 1.2 and 1.5 revised: “main clock” → “XIN clock”; “sub clock”
→ “XCIN clock”
- 0023h to 0025h: 40MHz On-Chip Oscillator Control Register
Table 1.1 R8C/24 Group Performance, Table 1.2 R8C/25 Group
Performance
• Serial Interface revised:
Figure 1.1 Block Diagram
• UART or Clock Synchronous Serial Interface: “(8 bits × 1 channel)” →
• UART (8 bits × 1 channel) deleted
Table 1.3 Product Information of R8C/24 Group, Table 1.4 Product
Information of R8C/25 Group
“Flash Memory Version” → “N Version” revised
“(8 bits × 2 channels)” revised
- Serial Interface: 2 channels Clock synchronous serial I/O, UART
- Clock Synchronous Serial Interface: 1 channel
I
2
C bus Interface
→ Voltage Detection Register 1, VCA1
→ Voltage Detection Register 2, VCA2
→ High-Speed On-Chip Oscillator Control Register
R8C/24 Group, R8C/25 Group Datasheet
A - 2
(1)
, Clock synchronous serial I/O with chip select
Description
Summary