PIC16F874-20/L Microchip Technology, PIC16F874-20/L Datasheet - Page 590

• Manufacturer Part Number: PIC16F874-20/L
• Description: IC MCU FLASH 4KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874-20/L

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: MSSP, PSP, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Details

Param
PICmicro MID-RANGE MCU FAMILY
30.16
DS31030A-page 30-20
No.
40
41
42
45
46
47
48
† Data in “Typ” column is at 5V, 25˚C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Tt0H
Tt0L
Tt0P
Tt1H
Tt1L
Tt1P
Ft1
Tcke2tmr
I
Symbol
Example Timer0 and Timer1 Timing Waveforms and Requirements
T1OSO/T1CKI
Note: Refer to
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T1CKI
High
Time
T1CKI
Low Time
T1CKI
input
period
Timer1 oscillator input frequency range
(oscillator enabled by setting the T1OSCEN bit)
Delay from external clock edge to timer
increment
TMR0 or
TMR1
T0CKI
Figure 30-6:
Table 30-18:
Synchronous, no prescaler
Synchronous,
Asynchronous PIC16CXXX
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous PIC16CXXX
Synchronous
Asynchronous
with prescaler
Figure 30-1
Characteristic
Example Timer0 and Timer1 External Clock Requirements
Example Timer0 and Timer1 External Clock Timings Waveforms
for load conditions.
No Prescaler
With Prescaler
No Prescaler
With Prescaler
PIC16CXXX
PIC16LCXXX
PIC16LCXXX
PIC16CXXX
PIC16LCXXX
PIC16LCXXX
40
45
42
47
20
20
20
G
G
0.5T
0.5T
0.5T
0.5T
Greater of:
REATER OF
REATER OF
S OR
S OR
2Tosc
S
2T
Min
CY
CY
CY
CY
DC
10
10
40
15
25
30
50
15
25
40
or 4T
41
46
CY
+ 20
+ 20
+ 20
+ 20
T
T
CY
CY
N
N
CY
:
:
+
+
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
†
7Tosc
1997 Microchip Technology Inc.
48
Max Units Conditions
200
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
N = prescale
value
(1, 2, 4,..., 256)
N = prescale
value
(1, 2, 4, 8)