R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 259

• Manufacturer Part Number: R5F211B1SP#U0
• Description: IC R8C MCU FLASH 4K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/1Br

Specifications of R5F211B1SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
17.5
Figure 17.8
Parasitic diode
Parasitic diode
Figure 17.8 shows the Internal Equivalent Circuit of Analog Input Block.
AN8
Control signal
for SW2
Control signal
for SW3
Internal Equivalent Circuit of Analog Input Block
NOTE:
Dec 08, 2006
VREF
AVSS
AN11
1. Use this data only as a guideline for circuit design.
i = 4
VCC
VSS
Mass production may cause some changes in device characteristics.
A/D control register 0
Internal Equivalent Circuit of Analog Input Block
Comparison reference voltage
ON resistor
approx. 2 k Ω Wiring resistor
ON resistor
approx. 2 k Ω Wiring resistor
b2
VCC VSS
SW1
SW1
b1
i ladder-type
switches
(Vref) generator
b0
Page 241 of 315
Connect to
Connect to
Sampling Com parison
approx. 0.2 k Ω
approx. 0.2 k Ω
Resistor
ladder
Connect to
Connect to
i ladder-type
wiring resistors
ON resistor
approx. 0.6 k Ω
ON resistor
approx. 0.6 k f
control signal
control signal
SW2
Reference
Sampling
SW2
SW1 conducts only to 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 at left.
SW4 conducts only when A/D conversion is not in progress.
VIN
Vref
Comparison
Analog input
voltage
voltage
C = Approx.1.5 pF
SW4
AVSS
AVCC
conversion register
ON resistor
approx. 5 k Ω
A/D successive
Chopper-type
SW3
AMP
amplifier
interrupt request
A/D conversion
17. A/D Converter