PIC16F913-I/SP Microchip Technology, PIC16F913-I/SP Datasheet - Page 10

• Manufacturer Part Number: PIC16F913-I/SP
• Description: IC PIC MCU FLASH 4KX14 28DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F913-I/SP

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 28-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 24
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SSP/I2C/AUSART/SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DV164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5-ch x 10-bit
• Package: 28SPDIP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F91X/946
3.1
The PIC16F91X/946 program memory may be written
in three ways. The PIC16F913/914 uses one-word and
four-word writes. The PIC16F916/917/946 uses one-
word, four-word and eight-word writes. The four-word
or eight-word algorithm is used to program the program
memory only. The one-word algorithm can write any
available memory location (i.e., program memory,
configuration memory and data memory).
After writing the array, the PC may be reset and read
back to verify the write. It is not possible to verify
immediately following the write because the PC can
only increment, not decrement.
A device Reset will clear the PC and set the address to
‘0’. The Increment Address command will increment
the PC. The Load Configuration command will set the
PC to 0x2000. The available commands are shown in
Table 3-1.
3.1.1
Only the program memory on PIC16F916/917/946 can
be written using this algorithm. Data and configuration
memory
programming algorithm (Section 3.1.3 “One-Word
Programming”).
This algorithm writes eight sequential addresses in
program memory. The eight addresses must point to an
eight-word block with addresses modulo 8 of 0, 1, 2, 3,
4, 5, 6 and 7. For example, programming address 8
through 15 can be programmed together. Program-
ming addresses 2 through 9 will create an unexpected
result.
The sequence for programming eight words of program
memory at a time is as follows:
1.
2.
3.
4.
5.
6.
7.
8.
9.
See Figure 3-18 for more information.
DS41244F-page 10
Load a word at the current program memory
address using Load Data For Program Memory
command.
Issue a Increment Address command.
Load a word at the current program memory
address using Load Data For Program Memory
command.
Repeat Step 2 and Step 3 six times.
Issue a Begin Programming command either
internally or externally timed.
Wait T
(externally timed).
Issue
externally timed.
Issue a Increment Address command.
Repeat this sequence as required to write
program memory.
Program/Erase Algorithms
(>0x2000)
EIGHT-WORD PROGRAMMING
PROG
a
End
1 (internally timed) or T
Programming
must
use
command
the
one-word
PROG
2
if
3.1.2
Four-word programming can be used on all devices in
the PIC16F91X/946 family. Only the program memory
can be written using this algorithm. Data and configura-
tion memory (>0x2000) must use the one-word
programming algorithm (Section 3.1.3 “One-Word
Programming”).
This algorithm writes four sequential addresses in
program memory. The four addresses must point to a
four-word block with addresses modulo 4 of 0, 1, 2 and
3. For example, programming address 4 through 7 can
be programmed together. Programming addresses 2
through 5 will create an unexpected result.
The sequence for programming four words of program
memory at a time is as follows:
1.
2.
3.
4.
5.
6.
7.
8.
9.
See Figure 3-17 for more information.
Load a word at the current program memory
address using Load Data For Program Memory
command.
Issue a Increment Address command.
Load a word at the current program memory
address using Load Data For Program Memory
command.
Repeat Step 2 and Step 3 two times.
Issue a Begin Programming command either
internally or externally timed.
Wait T
(externally timed).
Issue
externally timed.
Issue a Increment Address command.
Repeat this sequence as required to write
program memory.
FOUR-WORD PROGRAMMING
PROG
a
End
1 (internally timed) or T
Programming
© 2009 Microchip Technology Inc.
command
PROG
2
if