PIC18LF4221-I/PT Microchip Technology, PIC18LF4221-I/PT Datasheet - Page 268

• 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
REGISTER 24-12: DEVID1: DEVICE ID REGISTER 1 FOR PIC18F2221/2321/4221/4321 DEVICES
REGISTER 24-13: DEVID2: DEVICE ID REGISTER 2 FOR PIC18F2221/2321/4221/4321 DEVICES
DS39689F-page 268
bit 7-5
bit 4-0
bit 7-0
Legend:
R = Read-only bit
-n = Value when device is unprogrammed
bit 7
DEV<2:0>: Device ID bits
000 = PIC18F4321
010 = PIC18F4221
001 = PIC18F2321
011 = PIC18F2221
REV<4:0>: Revision ID bits
These bits are used to indicate the device revision.
bit 7
DEV<10:3>: Device ID bits
These bits are used with the DEV<2:0> bits in the Device ID Register 1 to identify the
part number.
0010 0001 = PIC18F2221/2321/4221/4321 devices
Legend:
R = Read-only bit
-n = Value when device is unprogrammed
DEV10
DEV2
Note:
R
R
These values for DEV<10:3> may be shared with other devices. The specific
device is always identified by using the entire DEV<10:0> bit sequence.
DEV1
DEV9
R
R
P = Programmable bit
P = Programmable bit
DEV0
DEV8
R
R
REV4
DEV7
R
R
REV3
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
DEV6
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
R
R
REV2
DEV5
R
© 2009 Microchip Technology Inc.
R
REV1
DEV4
R
R
REV0
DEV3
R
R
bit 0
bit 0