PIC16F506 Microchip Technology, PIC16F506 Datasheet - Page 72

• Manufacturer Part Number: PIC16F506
• Description: (PIC12F510 / PIC16F506) 8-Bit Flash Microcontroller
• Manufacturer: Microchip Technology

PIC12F510/16F506
10.12 In-Circuit Serial Programming™
The PIC12F510/16F506 microcontrollers can be
serially 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 manu-
facture 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.
The devices are placed into a Program/Verify mode by
holding the GP1/RB1 and GP0/RB0 pins low while rais-
ing the MCLR (V
ming
programming clock and GP0/RB0 becomes the
programming data. Both GP1/RB1 and GP0/RB0 are
Schmitt Trigger inputs in this mode.
After Reset, a 6-bit command is supplied to the device.
Depending on the command and if the command was a
Load or a Read, 14 bits of program data are then sup-
plied to or from the device. For complete details of serial
programming, please refer to the PIC12F510/16F506
Programming Specifications.
A typical In-Circuit Serial Programming connection is
shown in Figure 10-16.
DS41268B-page 70
specification).
(ICSP™)
PP
) pin from V
GP1/RB1
IL
to V
IHH
becomes
(see program-
Preliminary
the
FIGURE 10-16:
External
Connector
Signals
Data I/O
CLK
+5V
V
0V
PP
To Normal
Connections
To Normal
Connections
TYPICAL IN-CIRCUIT
SERIAL PROGRAMMING
CONNECTION
© 2006 Microchip Technology Inc.
V
V
MCLR/V
GP1/RB1
GP0/RB0
V
DD
SS
DD
PIC12F510
PIC16F506
PP