PIC16C771/JW Microchip Technology, PIC16C771/JW Datasheet - Page 104

• Manufacturer Part Number: PIC16C771/JW
• Description: IC MCU EPROM4KX14 A/D PWM 20CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C771/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: EPROM, UV
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-CDIP (0.300", 7.62mm) Window
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVA16XP200 - ADAPTER ICE 20DIP/SOIC/SSOPAC164028 - MODULE SKT PROMATEII 20SOIC/DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1066306

PIC16C717/770/771
REGISTER 10-2: VOLTAGE REFERENCE CONTROL REGISTER (REFCON: 9BH)
DS41120B-page 102
bit 7
bit 6
bit 5
bit 4
bit 3-0
bit 7
VRHEN: Voltage Reference High Enable bit (VRH = 4.096V nominal)
1 = Enabled, powers up reference generator
0 = Disabled, powers down reference generator if unused by LVD, BOR, or VRL
VRLEN: Voltage Reference Low Enable bit (VRL = 2.048V nominal)
1 = Enabled, powers up reference generator
0 = Disabled, powers down reference generator if unused by LVD, BOR, or VRH
VRHOEN: High Voltage Reference Output Enable bit
1 = Enabled, VRH analog reference is output on RA3 if enabled (VRHEN = 1)
0 = Disabled, analog reference is used internally only
VRLOEN: Low Voltage Reference Output Enable bit
1 = Enabled, VRL analog reference is output on RA2 if enabled (VRLEN = 1)
0 = Disabled, analog reference is used internally only
Unimplemented: Read as '0’
Legend:
R = Readable bit
- n = Value at POR
VRHEN
R/W-0
Note 1: RA2 and RA3 must be configured as analog inputs when the V
are enabled (See ANSEL on page 25).
VRLEN
R/W-0
VRHOEN
R/W-0
W = Writable bit
’1’ = Bit is set
VRLOEN
R/W-0
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
U-0
—
(1)
(1)
U-0
—
2002 Microchip Technology Inc.
x = Bit is unknown
REF
U-0
—
output functions
U-0
—
bit 0