PIC18LF4221-I/PT Microchip Technology, PIC18LF4221-I/PT Datasheet - Page 53

• 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

FIGURE 5-6:
FIGURE 5-7:
© 2009 Microchip Technology Inc.
Note:
INTERNAL RESET
PWRT TIME-OUT
INTERNAL POR
OST TIME-OUT
PLL TIME-OUT
INTERNAL RESET
T
T
PWRT TIME-OUT
OST
PLL
INTERNAL POR
OST TIME-OUT
MCLR
≈ 2 ms max. First three stages of the PWRT timer.
= 1024 clock cycles.
V
DD
SLOW RISE TIME (MCLR TIED TO V
TIME-OUT SEQUENCE ON POR w/PLL ENABLED (MCLR TIED TO V
MCLR
PIC18F2221/2321/4221/4321 FAMILY
V
DD
0V
T
PWRT
T
PWRT
DD
T
5V
OST
, V
DD
T
OST
RISE > T
T
PLL
PWRT
)
DS39689F-page 53
DD
)