PIC16F526-E/MG Microchip Technology, PIC16F526-E/MG Datasheet - Page 57

• Manufacturer Part Number: PIC16F526-E/MG
• Description: 1.5KB Flash Program, 64B Flash Data, 8MHz Internal Oscillator, 8b ADC, 2x Compar
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F526-E/MG

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 11
• Program Memory Size: 1.5KB (1K x 12)
• Program Memory Type: FLASH
• Ram Size: 67 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 3x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.10
If the code protection bit has not been programmed, the
on-chip program memory can be read out for
verification purposes.
The first 64 locations and the last location (OSCCAL)
can be read, regardless of the code protection bit
setting.
The last memory location can be read regardless of the
code protection bit setting on the PIC16F526 device.
8.11
Four memory locations 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.
Use only the lower 4 bits of the ID locations and always
program the upper 8 bits as ‘0’s.
8.12
The PIC16F526 microcontroller 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 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.
The devices are placed into a Program/Verify mode by
holding the RB1 and RB0 pins low while raising the
MCLR (V
specification). RB1 becomes the programming clock
and B0 becomes the programming data. Both RB1 and
RB0 are Schmitt Trigger inputs in this mode.
After Reset, a 6-bit command is then supplied to the
device. Depending on the command, 14 bits of program
data are then supplied to or from the device, depending
if the command was a Load or a Read. For complete
details of serial programming, please refer to the
PIC16F526 Programming Specifications.
A typical In-Circuit Serial Programming connection is
shown in Figure 8-15.
 2010 Microchip Technology Inc.
Program Verification/Code
Protection
ID Locations
In-Circuit Serial Programming™
PP
) pin from V
IL
to V
IHH
(see programming
FIGURE 8-15:
External
Connector
Signals
Data
CLK
+5V
V
0V
PP
To Normal
Connections
To Normal
Connections
TYPICAL IN-CIRCUIT
SERIAL PROGRAMMING
CONNECTION
PIC16F526
V
V
MCLR/V
RB1
RB0
V
DS41326E-page 57
DD
SS
DD
PIC16F526
PP