PIC16F716 Microchip Technology, PIC16F716 Datasheet - Page 72

• Manufacturer Part Number: PIC16F716
• Description: 8-bit Flash-based Microcontroller with A/D Converter and Enhanced Capture/Compare/PWM
• Manufacturer: Microchip Technology

PIC16F716
FIGURE 9-16:
9.14
If the code protection bit has not been programmed, the
on-chip program memory can be read out for
verification purposes.
9.15
Four memory locations (2000h - 2003h) are designated
as ID locations where the user can store checksum or
other code-identification numbers. These locations are
not accessible during normal execution, but are
readable and writable during program/verify. It is
recommended that only the 4 Least Significant bits of
the ID location are used.
DS41206A-page 70
(INTCON<1>)
GIE bit
(INTCON<7>)
Note
INTF flag
INSTRUCTION FLOW
CLKOUT(4)
Instruction
Instruction
executed
fetched
INT pin
OSC1
1:
2:
3:
4:
Program Verification/Code
Protection
ID Locations
PC
XT, HS or LP Oscillator mode assumed.
T
GIE = ‘1’ assumed. In this case after wake- up, the processor jumps to the interrupt routine. If GIE = ‘0’, execution will continue in-line.
CLKOUT is not available in these osc modes, but shown here for timing reference.
Inst(PC) = Sleep
Inst(PC - 1)
OST
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1
= 1024T
PC
WAKE-UP FROM SLEEP THROUGH INTERRUPT
OSC
(drawing not to scale). This delay will not be there for RC Osc mode.
Inst(PC + 1)
Sleep
PC+1
Processor in
Sleep
PC+2
Preliminary
T
OST
(2)
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Inst(PC + 2)
Inst(PC + 1)
9.16
PIC16F716
programmed while in the end application circuit. This is
simply done with two lines for clock and data, and three
other lines for power, ground and the programming
voltage. This allows customers to manufacture boards
with unprogrammed devices and then program the
microcontroller just before shipping the product. This
also allows the most recent firmware or a custom
firmware to be programmed.
For complete details on serial programming, please
refer to the In-Circuit Serial Programming™ (ICSP™)
Specification, (DS40245).
PC+2
In-Circuit Serial Programming™
Interrupt Latency
Dummy cycle
(Note 3)
PC + 2
microcontrollers
 2003 Microchip Technology Inc.
Inst(0004h)
Dummy cycle
0004h
can
Inst(0005h)
Inst(0004h)
0005h
be
serially