PIC16F877A-I/PT Microchip Technology Inc., PIC16F877A-I/PT Datasheet - Page 167

• Manufacturer Part Number: PIC16F877A-I/PT
• Description: 44 PIN, 7 KB FLASH, 368 RAM, 33 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F877A-I/PT

• A/d Inputs: 8-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 33
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TQFP
• Programmable Memory: 14K Bytes
• Ram Size: 368 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 15-10:
TABLE 15-4:
Param
2001 Microchip Technology Inc.
No.
40*
41*
42*
45*
46*
47*
48
Note: Refer to Figure 15-5 for load conditions.
*
†
RC0/T1OSO/T1CKI
TCKEZtmr1 Delay from external clock edge to timer increment
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Symbol
Tt0H
Tt0P
Tt1H
Tt1P
Tt0L
Tt1L
Ft1
RA4/T0CKI
TMR0 or
TMR1
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T1CKI High Time Synchronous, Prescaler = 1
T1CKI Low Time
T1CKI input
period
Timer1 oscillator input frequency range
(oscillator enabled by setting bit T1OSCEN)
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
Characteristic
Synchronous,
Prescaler = 2,4,8
Asynchronous
Synchronous, Prescaler = 1
Synchronous,
Prescaler = 2,4,8
Asynchronous
Synchronous
Asynchronous
40
45
No Prescaler
With Prescaler
No Prescaler
With Prescaler
No Prescaler
With Prescaler
Standard(F)
Extended(LF)
Standard(F)
Extended(LF)
Standard(F)
Extended(LF)
Standard(F)
Extended(LF)
Standard(F)
Extended(LF)
Standard(F)
Extended(LF)
42
47
30
50
20 or T
0.5T
0.5T
0.5T
0.5T
Greater of:
Greater of:
Greater of:
T
OR
OR
CY
2T
Min
100
CY
CY
CY
CY
41
DC
46
10
10
15
25
30
50
15
25
30
50
T
T
60
OSC
CY
+ 40
CY
CY
+ 20
+ 20
+ 20
+ 20
N
N
N
+ 40
+ 40
+ 40
Typ† Max Units
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7T
PIC16F87X
200
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OSC
48
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
DS30292C-page 165
Must also meet
parameter 42
Must also meet
parameter 42
N = prescale value
(2, 4,..., 256)
Must also meet
parameter 47
Must also meet
parameter 47
N = prescale value
(1, 2, 4, 8)
N = prescale value
(1, 2, 4, 8)
Conditions