PIC18LF4221-I/ML Microchip Technology, PIC18LF4221-I/ML Datasheet - Page 357

• Manufacturer Part Number: PIC18LF4221-I/ML
• Description: 4 KB Flash, 512 RAM 44 QFN 8x8x0.9mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF4221-I/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: 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-QFN
• Processor Series: PIC18LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: EUSART, I2C, MSSP, SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 4
• 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, ICE2000, ICE4000, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

FIGURE 27-8:
FIGURE 27-9:
TABLE 27-10: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
© 2009 Microchip Technology Inc.
Param.
30
31
32
33
34
35
36
37
38
39
No.
Watchdog
Time-out
Time-out
I/O pins
Internal
Internal
PWRT
MCLR
Reset
Timer
Reset
Internal Reference
Reference Voltage
TmcL
T
T
T
T
T
T
T
T
T
POR
OSC
Symbol
V
OST
CSD
WDT
PWRT
IOZ
BOR
IRVST
LVD
IOBST
DD
Enable Internal
Voltage Stable
AND BROWN-OUT RESET REQUIREMENTS
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(no postscaler)
Oscillation Start-up Timer Period
Power-up Timer Period
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
Brown-out Reset Pulse Width
Time for Internal Reference
Voltage to become Stable
High/Low-Voltage Detect Pulse Width
CPU Start-up Time
Time for INTOSC to Stabilize
V
IRVST
V
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
BROWN-OUT RESET TIMING
PIC18F2221/2321/4221/4321 FAMILY
DD
33
Characteristic
32
36
BV
1024 T
DD
3.56
Min
200
200
57
—
—
—
—
2
OSC
34
4.19
30
Typ
20
10
—
—
67
—
—
2
1
1024 T
35
Max
4.82
50
—
77
—
—
—
—
—
OSC
31
Units
ms
ms
μs
—
μs
μs
μs
μs
μs
μs
T
V
V
OSC
DD
DD
DS39689F-page 357
34
≤ B
≤ V
= OSC1 period
Conditions
VDD
LVD
(see D005)