UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 419

• Manufacturer Part Number: UPD78F0551MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0551MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 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: -

78K0/Kx2-L
12.3 Registers Used in A/D Converter
(1) A/D converter mode register 0 (ADM0)
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
The A/D converter uses the following seven registers.
• A/D converter mode register 0 (ADM0)
• 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)
• Analog input channel specification register (ADS)
• A/D port configuration registers 0, 1 (ADPC0, ADPC1)
• Port mode registers 1, 2, 7 (PM1, PM2, PM7)
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.
2.
Symbol
Address: FF28H
ADM0
ADCS
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
operation start to operation stabilization. Therefore, when ADCS is set to 1 after 1
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.
0
0
1
1
ADCS
ADCE
ADCS
<7>
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
FR2
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
CHAPTER 12 A/D CONVERTER
LV0
Note 2
1
Note 1
ADCE
<0>
μ
s or more has
μ
s from
405