PIC18LF4221-I/PT Microchip Technology, PIC18LF4221-I/PT Datasheet - Page 18

• Manufacturer Part Number: PIC18LF4221-I/PT
• Description: 4 KB Flash, 512 RAM 44 TQFP 10x10x1mm TRAY
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF4221-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2221/2321/4221/4321 FAMILY
TABLE 1-3:
DS39689F-page 18
MCLR/V
OSC1/CLKI/RA7
OSC2/CLKO/RA6
Legend: TTL = TTL compatible input
Note 1:
MCLR
V
RE3
OSC1
CLKI
RA7
OSC2
CLKO
RA6
PP
2:
Pin Name
PP
ST = Schmitt Trigger input with CMOS levels
I
Default assignment for CCP2 when Configuration bit, CCP2MX, is set.
Alternate assignment for CCP2 when Configuration bit, CCP2MX, is cleared.
/RE3
2
C = ST with I
PIC18F4221/4321 PINOUT I/O DESCRIPTIONS
PDIP
13
14
2
1
C™ or SMB levels
Pin Number
QFN TQFP
18
32
33
18
30
31
Type
Pin
I/O
I/O
O
O
P
I
I
I
I
Analog
Analog
Buffer
Type
TTL
TTL
ST
ST
—
—
Master Clear (input) or programming voltage (input).
Oscillator crystal or external clock input.
Oscillator crystal or clock output.
CMOS = CMOS compatible input or output
I
O
Master Clear (Reset) input. This pin is an active-low
Reset to the device.
Programming voltage input.
Digital input.
Oscillator crystal input or external clock source input.
ST buffer when configured in RC mode;
analog otherwise.
External clock source input. Always associated with
pin function OSC1. (See related OSC1/CLKI,
OSC2/CLKO pins.)
General purpose I/O pin.
Oscillator crystal output. Connects to crystal
or resonator in Crystal Oscillator mode.
In RC, EC and INTIO modes, OSC2 pin outputs
CLKO which has one-fourth the frequency of OSC1
and denotes the instruction cycle rate.
General purpose I/O pin.
= Input
= Output
Description
© 2009 Microchip Technology Inc.
P = Power