R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 392
R5F2121AJFP#U0
Manufacturer Part Number
R5F2121AJFP#U0
Description
MCU FLASH 96K 5K CMOS 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/21r
Datasheet
1.R5F21216JFP.pdf
(503 pages)
Specifications of R5F2121AJFP#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
96KB (96K x 8)
Program Memory Type
FLASH
Ram Size
5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
18.7
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Write to each bit (other than bit 6) in the ADCON0 register, each bit in the ADCON1 register, or the SMP bit
in the ADCON2 register when the A/D conversion stops (before a trigger occurs).
When the VCUT bit in the ADCON1 register is changed from 0 (VREF not connected) to 1 (VREF
connected), wait for at least 1 µs or longer before the A/D conversion starts.
When changing A/D operating mode, select an analog input pin again.
When using in one-shot mode. Ensure that the A/D conversion is completed and read the AD register. The IR
bit in the ADIC register or the ADST bit in the ADCON0 register can determine whether the A/D conversion
is completed.
When using the repeat mode, select the frequency of the A/D converter operating clock φAD or more for the
CPU clock during A/D conversion.
Do not select the fOCO-F for the φAD.
If setting the ADST bit in the ADCON0 register to 0 (A/D conversion stops) by a program and the A/D
conversion is forcibly terminated during the A/D conversion operation, the conversion result of the A/D
converter will be indeterminate. If the ADST bit is set to 0 by a program, do not use the value of AD register.
Connect 0.1 µF capacitor between the P4_2/VREF pin and AVSS pin.
Do not enter stop mode during A/D conversion.
Do not enter wait mode when the CM02 bit in the CM0 register is set to 1 (peripheral function clock stops in
wait mode) during A/D conversion.
Notes on A/D Converter
Page 374 of 458
18. A/D Converter
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