PIC16C781-I/SS Microchip Technology, PIC16C781-I/SS Datasheet - Page 81

• Manufacturer Part Number: PIC16C781-I/SS
• Description: IC MCU OTP 1KX14 W/AD COMP20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C781-I/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 1x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Other names: PIC16C781I/SS

10.0
The Digital-to-Analog Converter (DAC) module gener-
ates an output voltage proportional to the value in the
8-bit DAC register (see Figure 10-1).
The output of the DAC module can be configured to
drive:
• The reference input to the ADC module
• The reference input to Comparators C1 and C2
• An analog output on pin RB1/AN5/V
The voltage reference input
selected from:
• Analog supply AV
• Comparator C1 V
• Voltage reference V
REGISTER 10-1:
REGISTER 10-2:
2001 Microchip Technology Inc.
DIGITAL-TO-ANALOG
CONVERTER (DAC) MODULE
bit 7-0
bit 7
bit 6
bit 5-2
bit 1-0
REF
DD
R
DIGITAL-TO-ANALOG CONVERTER CONTROL REGISTER0 (DACON0: 11Fh)
DIGITAL-TO-ANALOG CONVERTER REGISTER (DAC: 11Eh)
DA<7:0>: Digital-to-Analog Converter Digital Input bits
bit 7
DAON: Digital-to-Analog Converter Enable bit
1 = DAC enabled
0 = DAC disabled
DAOE: Digital-to-Analog Converter Output Enable bit
1 = Output on the V
0 = Output is not available for external use
Unimplemented: Read as ’0’
DARS<1:0>: Digital-to-Analog Converter Voltage Reference Select bits, DAC
00 = Analog supply, AV
01 = Comparator reference, V
10 = Voltage reference, V
11 = Reserved, do not use
Legend:
R = Readable bit
- n = Value at POR
Legend:
R = Readable bit
- n = Value at POR
1
bit 7
DAON
R/W-0
R/W-0
DA7
to the DAC can be
R/W-0
DAOE
R/W-0
DA6
DAC
DAC
DD
pin
R
R/W-0
DA5
U-0
Preliminary
—
W = Writable bit
’1’ = Bit is set
W = Writable bit
’1’ = Bit is set
REF
1 pin
R/W-0
DA4
U-0
—
10.1
The DAC module is controlled via two special function
registers: DACON0 and DAC. The DACON0 register,
shown in Register 10-1:
• Enables DAC
• Enables output on RB1/AN5/V
• Selects reference voltage
The DAC register, shown in Register 10-2, sets the out-
put of the DAC.
Control Registers
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
’0’ = Bit is cleared
R/W-0
DA3
U-0
—
PIC16C781/782
R/W-0
DA2
U-0
—
x = Bit is unknown
DAC
DARS1
R/W-0
R/W-0
DA1
DS41171A-page 79
REF
DARS0
R/W-0
R/W-0
DA0
bit 0
bit 0