PIC18F2550-I/SP Microchip Technology Inc., PIC18F2550-I/SP Datasheet - Page 386

• Manufacturer Part Number: PIC18F2550-I/SP
• Description: Microcontroller; 32 KB Flash; 2048 RAM; 256 EEPROM; 24 I/O; 28-Pin-SPDIP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F2550-I/SP

• A/d Inputs: 10-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 12 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 23
• Interface: I2C/SPI/USART/USB
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 32K Bytes
• Ram Size: 2K Bytes
• Speed: 48 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC18F2455/2550/4455/4550
FIGURE 28-9:
TABLE 28-13: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
DS39632C-page 384
Param
40
41
42
45
46
47
48
No.
Note:
Tt0H
Tt0L
Tt0P
Tt1H
Tt1L
Tt1P
Ft1
Tcke2tmrI Delay from External T13CKI Clock Edge to Timer
T1OSO/T13CKI
Symbol
TMR0 or
Refer to Figure 28-4 for load conditions.
T0CKI
TMR1
T13CKI Low
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T13CKI High
Time
Time
T13CKI Input
Period
T13CKI Oscillator Input Frequency Range
Increment
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous
Synchronous
Asynchronous
Characteristic
40
45
Preliminary
No prescaler
With prescaler
No prescaler
With prescaler
No prescaler
With prescaler
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
42
47
0.5 T
0.5 T
(T
0.5 T
(T
0.5 T
Greater of:
Greater of:
41
46
T
CY
20 ns or
20 ns or
CY
2 T
CY
Min
DC
CY
10
CY
10
CY
10
25
30
50
10
25
30
50
60
+ 40)/N
+ 40)/N
CY
OSC
+ 10
+ 20
+ 20
+ 20
+ 5
7 T
Max
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
© 2006 Microchip Technology Inc.
OSC
48
Units
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
N = prescale
value
(1, 2, 4,..., 256)
V
V
V
V
N = prescale
value (1, 2, 4, 8)
DD
DD
DD
DD
Conditions
= 2.0V
= 2.0V
= 2.0V
= 2.0V