R5F21256SNFP#U0 Renesas Electronics America, R5F21256SNFP#U0 Datasheet - Page 413
R5F21256SNFP#U0
Manufacturer Part Number
R5F21256SNFP#U0
Description
IC R8C MCU FLASH 32K 52LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Datasheets
1.R5F211A2SPU0.pdf
(300 pages)
2.R5F21246SDFPU0.pdf
(61 pages)
3.R5F21246SDFPU0.pdf
(527 pages)
Specifications of R5F21256SNFP#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
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K 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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21256SNFP#U0R5F21256SNFP#ES
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
18.5
Figure 18.10
Parasitic Diode
Parasitic Diode
Figure 18.10 shows the Internal Equivalent Circuit of Analog Input.
AN0
Control signal
for SW2
Control signal
for SW3
Internal Equivalent Circuit of Analog Input
NOTE:
Feb 29, 2008
VREF
AVSS
i = 12
AN11
1. Use only as a standard for designing this data.
VCC
VSS
Mass production may cause some changes in device characteristics.
A/D Control Register 0
Internal Equivalent Circuit of Analog Input
Comparison reference voltage
b4
ON Resistor
Approx. 2k Ω Wiring Resistor
ON Resistor
Approx. 2k Ω Wiring Resistor
VCC VSS
b2
SW1
SW1
i Ladder-type
Switches
(Vref) generator
b1
C onnect to
C onnect to
Sampling C om parison
Page 394 of 485
b0
Approx. 0.2k Ω
Approx. 0.2k Ω
Resistor
ladder
C onnect to
C onnect to
i Ladder-type
Wiring Resistors
ON Resistor
Approx. 0.6k Ω
ON Resistor
Approx. 0.6k f
Control Signal
Control Signal
SW2
Reference
Sampling
SW5
SW1 conducts only on the ports selected for analog input.
SW2 and SW3 are open when A/D conversion is not in progress;
their status varies as shown by the waveforms in the diagrams on the left.
SW4 conducts only when A/D conversion is not in progress.
SW5 conducts when compare operation is in progress.
VIN
Vref
Comparison
Analog Input
voltage
Voltage
C = Approx.1.5pF
SW4
AVSS
AVCC
Conversion Register
ON Resistor
Approx. 5k Ω
A/D Successive
Chopper-type
SW3
AMP
Amplifier
Interrupt Request
A/D Conversion
18. A/D Converter
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