PIC16F887-E/P Microchip Technology, PIC16F887-E/P Datasheet - Page 12

• Manufacturer Part Number: PIC16F887-E/P
• Description: IC PIC MCU FLASH 8KX14 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F887-E/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Mfg Application Notes: Intro to Capacitive Sensing Appl Notes Layout and Physical Design Appl Note
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 35
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Package: 40PDIP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 35
• Interface Type: I2C/SPI/USART
• On-chip Adc: 14-chx10-bit
• Number Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Ram Size: 368 B
• Maximum Clock Frequency: 20 MHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 53273-916
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM164123, DM164120-3, DV164122
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA18XP400 - DEVICE ADAPTER 18F4220 PDIP 40LD
• Lead Free Status / Rohs Status: Details

PIC16F88X
3.2.3
The program memory may also be written one word at
a time to allow compatibility with other 8-pin and 14-pin
Flash PIC
(>0x2000) and data memory must be written one word
(or byte) at a time.
The sequence for programming one word of program
memory at a time is as follows:
1.
2.
3.
4.
5.
6.
See Figure 3-16 for more information.
3.2.4
The user IDs (0x2000-0x2003) and Configuration
Words
configuration memory, but do not physically reside in it.
As a result, the write latches are not reset when
programming these locations and must be reset by the
programmer. This can be done in two ways, either
loading all eight latches with ‘1’s or by exiting Program/
Verify mode.
The sequence for manually resetting the write latches
is as follows:
1.
2.
3.
DS41287D-page 12
Note:
Load a word at the current program memory
address using Load Data For Program Memory
command.
Issue a Begin Programming command either
internally or externally timed.
Wait T
(externally timed).
Issue End Programming if externally timed.
Issue an Increment Address command.
Repeat this sequence as required to write
program, data or configuration memory.
Load a word using Load Data for Program
Memory or Load Data for Configuration Memory
command with a data word of all ‘1’s.
Issue an Increment Address command.
Repeat this sequence three times on the
PIC16F883/884 and seven times on the
PIC16F886/887 to reset all write latches.
(0x2007-0x2008)
®
ONE-WORD PROGRAMMING
The write latches must be reset after
programming the user IDs (0x2000-0x2003)
or Configuration Words (0x2007-0x2008).
See
Latches”.
RESETTING WRITE LATCHES
PROG
MCU devices. Configuration memory
1 (internally timed) or T
Section 3.2.4
are
“Resetting
mapped
into
PROG
Write
2
the
3.2.5
The PIC16F88X will erase different memory locations
depending on the Program Counter (PC), CP and CPD
values, and which erase command is executed. The
following sequences can be used to erase noted
memory locations. In each sequence, the data memory
will be erased if the CPD bit in the Configuration Word
is programmed (clear).
To erase the program memory and Configuration
Words (0x2007-0x2008), the following sequence must
be performed. Note the Calibration Word (0x2009) and
user ID (0x2000-0x2003) will not be erased.
1.
2.
To erase the user ID (0x2000-0x2003), Configuration
Words (0x2007-0x2008) and program memory, use the
following sequence.
1.
2.
3.
To erase the data memory, use the following sequence:
1.
2.
Note:
Do a Bulk Erase Program Memory command.
Wait T
Perform Load Configuration with dummy data to
point the Program Counter (PC) to 0x2000.
Perform a Bulk Erase Program Memory
command.
Wait T
Perform a Bulk Erase Data Memory command.
Wait T
ERA
ERA
ERA
ERASE ALGORITHMS
The Calibration Word (0x2009) will not be
erased.
to complete erase.
to complete erase.
to complete erase.
 2009 Microchip Technology Inc.