PIC18F1230-I/SS Microchip Technology, PIC18F1230-I/SS Datasheet - Page 184

• Manufacturer Part Number: PIC18F1230-I/SS
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F1230-I/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Package: 20SSOP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 16
• Interface Type: USART
• On-chip Adc: 4-chx10-bit
• Number Of Timers: 2
• Processor Series: PIC18F
• Core: PIC
• Data Ram Size: 256 B
• Maximum Clock Frequency: 40 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DV164136
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164307 - MODULE SKT FOR PM3 28SSOP
• Lead Free Status / Rohs Status: Details

PIC18F1230/1330
REGISTER 18-1:
DS39758D-page 184
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
CVREN
R/W-0
CVREN: Comparator Voltage Reference Enable bit
1 = CV
0 = CV
Unimplemented: Read as ‘0’
CVRR: Comparator V
1 = 0 to 0.667 CV
0 = 0.25 CV
CVRSS: Comparator V
When CVRR = 1
1 = Comparator reference source, CV
0 = Comparator reference source, CV
When CVRR = 0
1 = V
0 = No reference is provided
CVR3:CVR0: Comparator V
When CVRR = 1:
CV
When CVRR = 0:
CV
REF
REF
U-0
—
REF
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
= ((CVR3:CVR0)/24)  (CV
= (CV
REF
REF
+ input used directly, comparator voltage reference bypassed
circuit powered on
circuit powered down
RSRC
RSRC
W = Writable bit
‘1’ = Bit is set
CVRR
R/W-0
RSRC
/4) + ((CVR3:CVR0)/32)  (CV
to 0.75 CV
REF
REF
, with CV
Range Selection bit
Source Selection bit
REF
RSRC
CVRSS
R/W-0
RSRC
Value Selection bits (0  (CVR3:CVR0)  15)
, with CV
RSRC
/24 step size (low range)
RSRC
RSRC
)
RSRC
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
= (V
= AV
R/W-0
CVR3
/32 step size (high range)
REF
RSRC
DD
+) – (AV
– AV
)
SS
SS
R/W-0
CVR2
)
 2009 Microchip Technology Inc.
x = Bit is unknown
R/W-0
CVR1
R/W-0
CVR0
bit 0