PIC18F452-I/LG Microchip Technology, PIC18F452-I/LG Datasheet - Page 208

• Manufacturer Part Number: PIC18F452-I/LG
• Description: IC MCU FLASH 16KX16 W/AD 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F452-I/LG

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• For Use With: XLT44L2 - SOCKET TRAN ICE 44PLCCDVA16XL441 - ADAPTER DEVICE ICE 44PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18FXX2
FIGURE 19-2:
DS39564C-page 206
GIEH bit
(INTCON<7>)
Note
INTF flag
(INTCON<1>)
INSTRUCTION FLOW
Instruction
Fetched
Instruction
Executed
CLKO
INT pin
OSC1
1:
2:
3:
4:
PC
(4)
XT, HS or LP Oscillator mode assumed.
GIE = '1' assumed. In this case, after wake-up, the processor jumps to the interrupt routine. If GIE = '0', execution will continue in-line.
T
CLKO is not available in these Osc modes, but shown here for timing reference.
OST
Inst(PC) = SLEEP
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1
Inst(PC - 1)
= 1024 T
PC
WAKE-UP FROM SLEEP THROUGH INTERRUPT
OSC
(drawing not to scale). This delay will not occur for RC and EC Osc modes.
Inst(PC + 2)
SLEEP
PC+2
Processor in
SLEEP
PC+4
T
OST (2)
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Inst(PC + 4)
Inst(PC + 2)
PC+4
Interrupt Latency
Dummy Cycle
PC + 4
(1,2)
(3)
© 2006 Microchip Technology Inc.
Dummy Cycle
Inst(0008h)
0008h
Inst(000Ah)
Inst(0008h)
000Ah