R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 407
![MCU 2KB FLASH 48K 52-LQFP](/photos/28/61/286101/52-lqfp_sml.jpg)
R5F21257SYFP#U0
Manufacturer Part Number
R5F21257SYFP#U0
Description
MCU 2KB FLASH 48K 52-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Specifications of R5F21257SYFP#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 ~ 105°C
Package / Case
52-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 18.4
A/D Control Register 0
b7 b6 b5 b4
NOTES:
1.
2.
3.
4.
If the ADCON0 register is rew ritten during A/D conversion, the conversion result is undefined.
After changing the A/D operating mode, select the analog input pin again.
Set øAD frequency to 10 MHz or below .
The analog input pin can be selected according to a combination of bits CH0 to CH2 and the ADGSEL0 bit.
Feb 29, 2008
CH2 to CH0
b3 b2 b1 b0
0
000b
001b
010b
011b
100b
101b
110b
111b
ADCON0 Register in One-Shot Mode
ADGSEL0 = 0
Bit Symbol
ADGSEL0
ADCON0
(1)
ADCAP
Symbol
ADST
CKS0
CH0
CH1
CH2
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
MD
Page 388 of 485
Analog input pin select bits (Note 4)
A/D operating mode select
bit
A/D input group select bit
A/D conversion automatic
start bit
A/D conversion start flag
Frequency select bit 0
(2)
ADGSEL0 = 1
Do not set.
Address
Bit Name
00D6h
AN10
AN11
AN8
AN9
(4)
0 : One-shot mode
0 : Selects port P0 group (AN0 to AN7)
1 : Selects port P1 group (AN8 to AN11)
0 : Starts at softw are trigger (ADST bit)
1 : Starts at timer RD
0 : Stops A/D conversion
1 : Starts A/D conversion
[When CKS1 in ADCON1 register = 0]
0 : Selects f4
1 : Selects f2
[When CKS1 in ADCON1 register = 1]
0 : Selects f1
1 : Selects fOCO-F
(complementary PWM mode)
(3)
After Reset
Function
00h
18. A/D Converter
RW
RW
RW
RW
RW
RW
RW
RW
RW
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