PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 343

• Manufacturer Part Number: PIC18F6621-I/PT
• Description: 64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F6621-I/PT

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 54
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 3.8K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 27-9:
FIGURE 27-10:
TABLE 27-11: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
 2005 Microchip Technology Inc.
30
31
32
33
34
35
36
37
Param.
Internal Reference
Reference Voltage
No.
Watchdog
Time-out
Time-out
Note:
I/O Pins
Internal
Internal
Enable Internal
PWRT
MCLR
Voltage Stable
Reset
Reset
Timer
POR
OSC
V
DD
TmcL
T
T
T
T
T
T
T
Symbol
OST
WDT
PWRT
IOZ
BOR
IRVST
LVD
Refer to Figure 27-4 for load conditions.
V
IRVST
V
DD
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
Low-Voltage Detect Pulse Width
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
BROWN-OUT RESET TIMING
33
Characteristic
32
PIC18F6525/6621/8525/8621
36
BV
DD
1024 T
Min
200
200
28
—
—
2
7
OSC
34
30
Typ
—
18
—
72
—
20
—
2
35
1024 T
Max
132
—
33
—
—
50
—
OSC
31
Units
ms
ms
µs
—
µs
µs
µs
µs
T
V
V
OSC
DD
DD
34
≤ B
DS39612B-page 341
≤ V
= OSC1 period
Conditions
VDD
LVD
V
BGAP
(see D005)
= 1.2V