UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 161

• Manufacturer Part Number: UPD78F9212CS-CAB-A
• Description: MCU 8BIT 4KB FLASH 16PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9212CS-CAB-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

9.2
(1) ANI0 to ANI3 pins
(2) Sample & hold circuit
(3) D/A converter
(4) Voltage comparator
ANI1/P21/TI010/
ANI0/P20/TI000
Figure 9-2 shows the block diagram of A/D converter.
ANI2/X2/P22
ANI3/X1/P23
Cautions 1. In PD78F921x, V
The A/D converter consists of the following hardware.
TO00/INTP0
Analog input
channel specification
register (ADS)
These are the analog input pins of the 4-channel A/D converter. They input analog signals to be converted into
digital signals. Pins other than the one selected as the analog input pin by the analog input channel specification
register (ADS) can be used as I/O port pins.
The sample & hold circuit samples the input signal of the analog input pin selected by the selector when A/D
conversion is started, and holds the sampled analog input voltage value during A/D conversion.
The D/A converter is connected between V
input signal.
The voltage comparator compares the sampled analog input voltage and the output voltage of the D/A converter.
Configuration of A/D Converter
TOH1
2. In PD78F921x, V
ADS1
sure to connect V
using the A/D converter, stabilize V
2
ADS0
ADCS
CHAPTER 9 A/D CONVERTER ( PD78F921x ONLY)
Figure 9-2. Block Diagram of A/D Converter
DD
SS
SS
Sample & hold circuit
FR2
to a stabilized GND (= 0 V).
functions alternately as the A/D converter reference voltage input. When
functions alternately as the ground potential of the A/D converter. Be
Internal bus
FR1
User’s Manual U16994EJ6V0UD
V
3
SS
DD
A/D converter mode
register (ADM)
FR0
and V
DD
ADCE
SS
at the supply voltage used (2.7 to 5.5 V).
Controller
, and generates a voltage to be compared with the analog
Voltage comparator
register (SAR)
approximation
Successive
A/D conversion result register
(ADCR, ADCRH)
D/A converter
INTAD
159
V
V
DD
SS