UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 166

• 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: -

(2) Analog input channel specification register (ADS)
(3) 10-bit A/D conversion result register (ADCR)
164
Symbol
ADCR
This register specifies the input port of the analog voltage to be A/D converted.
ADS can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
This register is a 16-bit register that stores the A/D conversion result. The higher six bits are fixed to 0. Each
time A/D conversion ends, the conversion result is loaded from the successive approximation register, and is
stored in ADCR in order starting from bit 1 of FF19H. FF19H indicates the higher 2 bits of the conversion result,
and FF18H indicates the lower 8 bits of the conversion result.
ADCR can be read by a 16-bit memory manipulation instruction.
Reset signal generation makes ADCR undefined.
Address: FF18H, FF19H
Caution When writing to the A/D converter mode register (ADM) and analog input channel
0
Figure 9-5. Format of Analog Input Channel Specification Register (ADS)
0
Symbol
Address: FF81H
specification register (ADS), the contents of ADCR may become undefined. Read the
conversion result following conversion completion before writing to ADM and ADS.
Using timing other than the above may cause an incorrect conversion result to be read.
Figure 9-6. Format of 10-bit A/D Conversion Result Register (ADCR)
ADS
0
Caution Be sure to clear bits 2 to 7 of ADS to 0.
ADS1
0
7
0
0
1
1
0
CHAPTER 9 A/D CONVERTER ( PD78F921x ONLY)
FF19H
After reset: Undefined
After reset: 00H
ADS0
0
0
6
0
1
0
1
User’s Manual U16994EJ6V0UD
0
ANI0
ANI1
ANI2
ANI3
0
5
Analog input channel specification
R/W
0
4
R
0
3
0
2
ADS1
1
FF18H
ADS0
0