PIC18F45K20T-I/MV Microchip Technology, PIC18F45K20T-I/MV Datasheet - Page 291

• Manufacturer Part Number: PIC18F45K20T-I/MV
• Description: 32KB, Flash, 1536bytes-RAM, 36I/O, 8-bit Family,nanowatt XLP 40 UQFN 5x5x0.5mm T
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F45K20T-I/MV

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-UFQFN Exposed Pad
• Processor Series: PIC18
• Core: PIC18F
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: I2C, SPI, SCI, USB, MSSP, RJ11
• Maximum Clock Frequency: 64 MHz
• Number Of Programmable I/os: 35
• Number Of Timers: 4
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: MPLAB Integrated Development Environment
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Supply Current (max): 14 uA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE 21-2:
REGISTER 21-1:
 2010 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
Note 1:
CVREN
R/W-0
Note 1:
CVROE overrides the TRISA<2> bit setting.
CVREN: Comparator Voltage Reference Enable bit
1 = CV
0 = CV
CVROE: Comparator V
1 = CV
0 = CV
CVRR: Comparator V
1 = 0 to 0.667 CV
0 = 0.25 CV
CVRSS: Comparator V
1 = Comparator reference source, CV
0 = Comparator reference source, CV
CVR<3:0>: Comparator V
When CVRR = 1:
CV
When CVRR = 0:
CV
CVROE
PIC18F2XK20/4XK20
R is dependent upon the voltage reference Configuration bits, CVR<3:0> and CVRR.
REF
REF
CV
Module
R/W-0
REF
VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
= ((CVR<3:0>)/24)  (CV
= (CV
REF
REF
REF
REF
(1)
circuit powered on
circuit powered down
voltage level is also output on the CV
voltage is disconnected from the CV
RSRC
RSRC
Impedance
Reference
W = Writable bit
‘1’ = Bit is set
Voltage
Output
R
R/W-0
CVRR
RSRC
/4) + ((CVR<3:0>)/32)  (CV
to 0.75 CV
(1)
REF
REF
REF
, with CV
Range Selection bit
REF
CV
Source Selection bit
Output Enable bit
RSRC
REF
Value Selection bits (0  (CVR<3:0>)  15)
CVRSS
RSRC
RSRC
R/W-0
, with CV
) + V
/24 step size (low range)
RSRC
RSRC
REF
RSRC
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
= (V
= V
(1)
-
RSRC
R/W-0
CVR3
PIC18F2XK20/4XK20
DD
REF
/32 step size (high range)
REF
REF
– V
) + V
+) – (V
pin
pin
SS
REF
+
–
REF
-
R/W-0
CVR2
-)
Buffered CV
x = Bit is unknown
R/W-0
CVR1
REF
DS41303G-page 291
Output
R/W-0
CVR0
bit 0