PIC12C671-04I/P Microchip Technology Inc., PIC12C671-04I/P Datasheet - Page 63

• Manufacturer Part Number: PIC12C671-04I/P
• Description: 8 PIN, 1.75 KB OTP, 128 RAM, 6 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC12C671-04I/P

• A/d Inputs: 4-Channel, 8-Bit
• Cpu Speed: 2.5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 5
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 8-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 128 Bytes
• Speed: 4 MHz
• Timers: 1-8-bit
• Voltage, Range: 2.5-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 9-14: INT PIN INTERRUPT TIMING
1999 Microchip Technology Inc.
Note 1: INTF flag is sampled here (every Q1).
OSC1
CLKOUT
INT pin
INTF flag
(INTCON<1>)
GIE bit
(INTCON<7>)
INSTRUCTION FLOW
Instruction
fetched
Instruction
executed
2: Interrupt latency = 3-4 T
3: CLKOUT is available only in INTRC and EXTRC oscillator modes.
4: For minimum width of INT pulse, refer to AC specs.
5: INTF is enabled to be set anytime during the Q4-Q1 cycles.
PC
Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction.
3
Q1
Inst (PC-1)
Inst (PC)
1
Q2
PC
Q3
4
CY
Q4
5
where T
Q1
Inst (PC+1)
Inst (PC)
CY
Q2
1
= instruction cycle time.
PC+1
Q3
Q4
Interrupt Latency
Q1
Dummy Cycle
Q2
PC+1
—
Q3
Q4
2
Q1
Dummy Cycle
Inst (0004h)
Q2
0004h
Q3
PIC12C67X
Q4
Q1
DS30561B-page 63
Inst (0005h)
Q2
Inst (0004h)
0005h
Q3
Q4