PIC16C621-04I/SO Microchip Technology, PIC16C621-04I/SO Datasheet - Page 34

• Manufacturer Part Number: PIC16C621-04I/SO
• Description: IC MCU OTP 1KX14 COMP 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C621-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: OTP
• Ram Size: 80 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 96 B
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 13
• Number Of Timers: 8
• Operating Supply Voltage: 3 V to 6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

PIC16C62X
FIGURE 6-3:
FIGURE 6-4:
DS30235J-page 32
Instruction
PC
(Program
Counter)
Fetch
Instruction
Execute
TMR0
OSC1
CLKOUT(3)
TMR0 timer
GIE bit
(INTCON<7>)
INSTRUCTION FLOW
T0IF bit
(INTCON<2>)
Instruction
fetched
Instruction
executed
PC
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
T0
Note 1: T0IF interrupt flag is sampled here (every Q1).
PC-1
Q1
2: Interrupt latency = 3T
3: CLKOUT is available only in RC Oscillator mode.
FEh
Inst (PC)
Inst (PC-1)
Q2
TIMER0 TIMING: INTERNAL CLOCK/PRESCALE 1:2
TIMER0 INTERRUPT TIMING
PC
1
MOVWF TMR0 MOVF TMR0,WMOVF TMR0,W MOVF TMR0,WMOVF TMR0,WMOVF TMR0,W
Q3
PC
T0+1
Q4
Q1
FFh
CY
Write TMR0
executed
, where T
Inst (PC+1)
1
Inst (PC)
PC+1
Q2
PC +1
Q3
CY
= instruction cycle time.
Q4
Read TMR0
reads NT0
PC+2
Q1
Interrupt Latency Time(2)
00h
Dummy cycle
Q2
PC +1
Read TMR0
reads NT0
PC+3
Q3
NT0
Q4
Read TMR0
reads NT0
Q1
PC+4
01h
Dummy cycle
Inst (0004h)
Q2
0004h
Q3
 2003 Microchip Technology Inc.
Read TMR0
reads NT0
PC+5
Q4
Q1
02h
NT0+1
Read TMR0
reads NT0 + 1
Inst (0004h)
Inst (0005h)
Q2
0005h
PC+6
Q3
Q4