PIC16F877-04E/PT Microchip Technology, PIC16F877-04E/PT Datasheet - Page 529

• Manufacturer Part Number: PIC16F877-04E/PT
• Description: IC MCU FLASH 8KX14 EE 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-04E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PIC16F87704E/PT

29.4
1997 Microchip Technology Inc.
Q Cycle Activity
Tosc
Each instruction cycle (Tcy) is comprised of four Q cycles (Q1-Q4). The Q cycle is the same as
the device oscillator cycle (T
Read, Process Data, Write etc., of each instruction cycle. The following diagram shows the rela-
tionship of the Q cycles to the instruction cycle.
The four Q cycles that make up an instruction cycle (Tcy) can be generalized as:
Each instruction will show the detailed Q cycle operation for the instruction.
Figure 29-2: Q Cycle Activity
Q1: Instruction Decode Cycle or forced No Operation
Q2: Instruction Read Cycle or No Operation
Q3: Process the Data
Q4: Instruction Write Cycle or No Operation
Q1
Q2
Tcy1
Q3
Q4
Section 29. Instruction Set
OSC
Q1
). The Q cycles provide the timing/designation for the Decode,
Q2
Tcy2
Q3
Q4
Q1
Q2
Tcy3
Q3
Q4
DS31029A-page 29-7
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