R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 20

• 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
4.
An SFR (special function register) is a control register for a peripheral function. Tables 4.1 to 4.7 list the special
function registers.
Table 4.1
X: Undefined
NOTES:
0000h
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
000Ch
000Dh
000Eh
000Fh
0010h
0011h
0012h
0013h
0014h
0015h
0016h
0017h
0018h
0019h
001Ah
001Bh
001Ch
001Dh
001Eh
001Fh
0020h
0021h
0022h
0023h
0024h
0025h
0026h
0027h
0028h
0029h
002Ah
002Bh
002Ch
0030h
0031h
0032h
0033h
0034h
0035h
0036h
0037h
0038h
0039h
003Ah
003Eh
003Fh
Address
Special Function Registers (SFRs)
1.
2.
3.
4.
5.
6.
The blank regions are reserved. Do not access locations in these regions.
Software reset, watchdog timer reset, and voltage monitor 1 reset or voltage monitor 2 reset do not affect this register.
The LVD0ON bit in the OFS register is set to 1 and hardware reset.
Power-on reset, voltage monitor 0 reset or the LVD0ON bit in the OFS register is set to 0, and hardware reset.
Software reset, watchdog timer reset, and voltage monitor 1 reset or voltage monitor 2 reset do not affect b2 and b3.
The CSPROINI bit in the OFS register is set to 0.
Feb 29, 2008
Processor Mode Register 0
Processor Mode Register 1
System Clock Control Register 0
System Clock Control Register 1
Protect Register
Oscillation Stop Detection Register
Watchdog Timer Reset Register
Watchdog Timer Start Register
Watchdog Timer Control Register
Address Match Interrupt Register 0
Address Match Interrupt Enable Register
Address Match Interrupt Register 1
Count Source Protection Mode Register
High-Speed On-Chip Oscillator Control Register 0
High-Speed On-Chip Oscillator Control Register 1
High-Speed On-Chip Oscillator Control Register 2
Clock Prescaler Reset Flag
High-Speed On-Chip Oscillator Control Register 4
High-Speed On-Chip Oscillator Control Register 6
High-Speed On-Chip Oscillator Control Register 7
Voltage Detection Register 1
Voltage Detection Register 2
Voltage Monitor 1 Circuit Control Register
Voltage Monitor 2 Circuit Control Register
Voltage Monitor 0 Circuit Control Register
SFR Information (1)
Page 18 of 51
(2)
(2)
(1)
Register
(5)
(5)
(2)
4. Special Function Registers (SFRs)
PM0
PM1
CM0
CM1
PRCR
OCD
WDTR
WDTS
WDC
RMAD0
AIER
RMAD1
CSPR
FRA0
FRA1
FRA2
CPSRF
FRA4
FRA6
FRA7
VCA1
VCA2
VW1C
VW2C
VW0C
Symbol
00h
00h
01101000b
00100000b
00h
00000100b
XXh
XXh
00X11111b
00h
00h
00h
00h
00h
00h
00h
00h
10000000b
00h
When shipping
00h
00h
When shipping
When shipping
When shipping
00001000b
00h
00100000b
00001000b
00h
0000X000b
0100X001b
(3)
After reset
(6)
(4)
(3)
(4)