PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 339

• 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

27.4.3
FIGURE 27-5:
TABLE 27-6:
 2005 Microchip Technology Inc.
1A
1
2
3
4
Note 1:
Param.
No.
OSC1
CLKO
2:
F
T
T
TosL,
TosH
TosR,
TosF
Instruction cycle period (T
except PLL. All specified values are based on characterization data for that particular oscillator type under
standard operating conditions with the device executing code. Exceeding these specified limits may result
in an unstable oscillator operation and/or higher than expected current consumption. All devices are tested
to operate at “min.” values with an external clock applied to the OSC1/CLKI pin. When an external clock
input is used, the “max.” cycle time limit is “DC” (no clock) for all devices.
PIC18F6525/6621/8525/8621 devices using external memory interface.
Symbol
TIMING DIAGRAMS AND SPECIFICATIONS
OSC
CY
OSC
EXTERNAL CLOCK TIMING REQUIREMENTS
External CLKI Frequency
Oscillator Frequency
External CLKI Period
Oscillator Period
Instruction Cycle Time
External Clock in (OSC1)
High or Low Time
External Clock in (OSC1)
Rise or Fall Time
EXTERNAL CLOCK TIMING (ALL MODES EXCEPT PLL)
Q4
Characteristic
CY
(1)
Q1
) equals four times the input oscillator time base period for all configurations
1
(1)
(1)
(1)
PIC18F6525/6621/8525/8621
(1)
Min
250
250
100
160
100
DC
DC
DC
DC
0.1
2.5
25
40
40
40
30
30
10
—
—
—
Q2
4
4
4
5
2
10,000
Max
6.25
250
250
250
200
7.5
25
40
25
25
10
33
20
50
—
—
—
—
—
—
—
—
3
4
4
Q3
3
Units
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
µs
ns
ns
ns
ns
EC, ECIO
EC, ECIO
EC, ECIO (+85ºC to +125ºC)
RC oscillator
XT oscillator
HS oscillator
HS + PLL oscillator
HS + PLL oscillator
LP Oscillator mode
EC, ECIO
EC, ECIO
EC, ECIO (+85ºC to +125ºC)
RC oscillator
XT oscillator
HS oscillator
HS + PLL oscillator
HS + PLL oscillator
LP oscillator
T
XT oscillator
LP oscillator
HS oscillator
XT oscillator
LP oscillator
HS oscillator
Q4
CY
4
= 4/F
4
OSC
(2)
(2)
Conditions
(-40ºC to +85ºC)
DS39612B-page 337
Q1
(2)
(2)