UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 372

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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12.3 Registers Used in A/D Converter
(1) A/D converter mode register 0 (ADM0)
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The A/D converter uses the following seven registers.
This register sets the conversion time for analog input to be A/D converted, and starts/stops conversion.
ADM0 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Notes 1.
A/D converter mode register 0 (ADM0)
A/D port configuration registers 0, 1 (ADPC0, ADPC1)
Analog input channel specification register (ADS)
Port mode registers 1, 2 (PM1, PM2)
10-bit A/D conversion result register (ADCR)
8-bit A/D conversion result register L (ADCRL)
8-bit A/D conversion result register H (ADCRH)
Symbol
Address: FF28H
ADM0
2.
ADCS
0
0
1
1
For details of FR2 to FR0, LV1, LV0, and A/D conversion, refer to Table 12-2 A/D Conversion Time
Selection.
The operation of the A/D voltage comparator is controlled by ADCS and ADCE, and it takes 1 s from
operation start to operation stabilization. Therefore, when ADCS is set to 1 after 1 s or more has
elapsed from the time ADCE is set to 1, the conversion result at that time has priority over the first
conversion result. Otherwise, ignore data of the first conversion.
ADCS
ADCE
ADCS
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0
1
0
1
Figure 12-2. Format of A/D Converter Mode Register 0 (ADM0)
ADCE
0
1
0
1
After reset: 00H
Stops conversion operation
Enables conversion operation
Stops A/D voltage comparator operation
Enables A/D voltage comparator operation
6
0
Stop status (DC power consumption path does not exist)
Conversion waiting mode (only A/D voltage comparator consumes power)
Setting prohibited
Conversion mode (A/D voltage comparator operation)
Table 12-1. Settings of ADCS and ADCE
Preliminary User’s Manual U19111EJ2V1UD
FR2
CHAPTER 12 A/D CONVERTER
5
R/W
Note 1
A/D voltage comparator operation control
FR1
A/D conversion operation control
4
Note 1
A/D Conversion Operation
FR0
3
Note 1
LV1
2
Note 1
LV0
Note 2
1
Note 1
ADCE
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