UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 172

• 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: -

170
The setting method is described below.
<Change the channel>
<Complete A/D conversion>
<1> Set bit 0 (ADCE) of the A/D converter mode register (ADM) to 1.
<2> Select the channel and conversion time using bits 1 and 0 (ADS1, ADS0) of the analog input channel
<3> Execute two NOP instructions or an instruction equivalent to two machine cycles.
<4> Set bit 7 (ADCS) of ADM to 1 to start A/D conversion.
<5> An interrupt request signal (INTAD) is generated.
<6> Transfer the A/D conversion data to the A/D conversion result register (ADCR, ADCRH).
<7> Change the channel using bits 1 and 0 (ADS1, ADS0) of ADS to start A/D conversion.
<8> An interrupt request signal (INTAD) is generated.
<9> Transfer the A/D conversion data to the A/D conversion result register (ADCR, ADCRH).
<10> Clear ADCS to 0.
<11> Clear ADCE to 0.
Cautions 1. Make sure the period of <1> to <4> is 1 s or more.
specification register (ADS) and bits 5 to 3 (FR2 to FR0) of ADM.
2. It is no problem if the order of <1> and <2> is reversed.
3. <1> can be omitted. However, ignore the data resulting from the first conversion after
4. The period from <5> to <8> differs from the conversion time set using bits 5 to 3 (FR2 to
<4> in this case.
FR0) of ADM. The period from <7> to <8> is the conversion time set using FR2 to FR0.
CHAPTER 9 A/D CONVERTER ( PD78F921x ONLY)
User’s Manual U16994EJ6V0UD