R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 11

• 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: -

7.
8.
9.
10.
6.2
6.3
6.4
7.1
7.2
7.3
7.4
7.5
8.1
10.1
10.2
10.3
10.4
10.5
10.6
10.7
6.1.1
6.1.2
6.1.3
10.2.1
10.2.2
10.4.1
10.4.2
10.4.3
10.4.4
10.4.5
10.4.6
10.4.7
10.4.8
10.4.9
10.5.1
10.5.2
10.5.3
10.6.1
10.7.1
10.7.2
10.7.3
10.7.4
Programmable I/O Ports ............................................................................................................... 46
Processor Mode ............................................................................................................................ 71
Bus ................................................................................................................................................ 72
Clock Generation Circuit ............................................................................................................... 73
Voltage Monitor 0 Reset ......................................................................................................................... 41
Voltage Monitor 1 Interrupt and Voltage Monitor 1 Reset ..................................................................... 42
Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset ..................................................................... 44
Functions of Programmable I/O Ports ..................................................................................................... 46
Effect on Peripheral Functions ................................................................................................................ 47
Pins Other than Programmable I/O Ports ................................................................................................ 47
Port settings ............................................................................................................................................. 59
Unassigned Pin Handling ........................................................................................................................ 70
Processor Modes ...................................................................................................................................... 71
XIN Clock ............................................................................................................................................... 82
On-Chip Oscillator Clocks ...................................................................................................................... 83
XCIN Clock ............................................................................................................................................. 84
CPU Clock and Peripheral Function Clock ............................................................................................. 85
Power Control .......................................................................................................................................... 87
Oscillation Stop Detection Function ....................................................................................................... 96
Notes on Clock Generation Circuit ......................................................................................................... 99
Monitoring Vdet0 ............................................................................................................................... 40
Monitoring Vdet1 ............................................................................................................................... 40
Monitoring Vdet2 ............................................................................................................................... 40
Low-Speed On-Chip Oscillator Clock ................................................................................................ 83
High-Speed On-Chip Oscillator Clock ............................................................................................... 83
System Clock ...................................................................................................................................... 85
CPU Clock .......................................................................................................................................... 85
Peripheral Function Clock (f1, f2, f4, f8, and f32) ............................................................................. 85
fOCO ................................................................................................................................................... 85
fOCO40M ........................................................................................................................................... 85
fOCO-F ............................................................................................................................................... 85
fOCO-S ............................................................................................................................................... 85
fOCO128 ............................................................................................................................................. 85
fC4 and fC32 ....................................................................................................................................... 86
Standard Operating Mode ................................................................................................................... 87
Wait Mode .......................................................................................................................................... 89
Stop Mode ........................................................................................................................................... 93
How to Use Oscillation Stop Detection Function ............................................................................... 96
Stop Mode ........................................................................................................................................... 99
Wait Mode .......................................................................................................................................... 99
Oscillation Stop Detection Function ................................................................................................... 99
Oscillation Circuit Constants .............................................................................................................. 99
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