PIC18F2221-E/ML Microchip Technology, PIC18F2221-E/ML Datasheet - Page 220

• Manufacturer Part Number: PIC18F2221-E/ML
• Description: 4KB, Flash, 512bytes-RAM, 25I/O, 8-bit Family,nanoWatt 28 QFN 6x6mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2221-E/ML

• 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: 25
• 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): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2221/2321/4221/4321 FAMILY
FIGURE 19-1:
FIGURE 19-2:
DS39689F-page 220
BRG Value
BRG Clock
ABDEN bit
Note: The ABD sequence requires the EUSART module to be configured in Asynchronous mode and WUE = 0.
(Interrupt)
SPBRGH
RCIF bit
RCREG
ABDOVF bit
SPBRG
BRG Clock
BRG Value
RX pin
ABDEN bit
Read
RX pin
Set by User
XXXXh
XXXXh
AUTOMATIC BAUD RATE CALCULATION
BRG OVERFLOW SEQUENCE
0000h
Start
0000h
Bit 0
XXXXh
XXXXh
Edge #1
Start
Bit 1
Bit 2
Edge #2
Bit 0
Bit 3
Bit 4
Edge #3
Bit 5
Bit 6
Edge #4
© 2009 Microchip Technology Inc.
FFFFh
Bit 7
Stop Bit
Edge #5
Auto-Cleared
0000h
001Ch
1Ch
00h