PIC16F916-I/SO Microchip Technology Inc., PIC16F916-I/SO Datasheet - Page 155
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PIC16F916-I/SO
Manufacturer Part Number
PIC16F916-I/SO
Description
28 PIN, 14 KB FLASH, 352 RAM, 25 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F916-ISO.pdf
(272 pages)
Specifications of PIC16F916-I/SO
A/d Inputs
5-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
25
Interface
I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin SOIC
Programmable Memory
14K Bytes
Ram Size
352 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F916-I/SO
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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13.0
Data EEPROM memory is readable and writable and
the Flash program memory is readable during normal
operation (full V
directly mapped in the register file space. Instead, they
are indirectly addressed through the Special Function
Registers. There are six SFRs used to access these
memories:
• EECON1
• EECON2
• EEDATL
• EEDATH
• EEADRL
• EEADRH
When interfacing the data memory block, EEDATL
holds the 8-bit data for read/write, and EEADRL holds
the address of the EE data location being accessed.
This device has 256 bytes of data EEPROM with an
address range from 0h to 0FFh.
When interfacing the program memory block, the
EEDATL and EEDATH registers form a 2-byte word
that holds the 14-bit data for read, and the EEADRL
and EEADRH registers form a 2-byte word that holds
the 13-bit address of the EEPROM location being
accessed. This device has 4k and 8k words of program
EEPROM with an address range from 0h-0FFFh and
0h-1FFFh. The program memory allows one word
reads.
The EEPROM data memory allows byte read and write.
A byte write automatically erases the location and
writes the new data (erase before write).
The write time is controlled by an on-chip timer. The
write/erase voltages are generated by an on-chip
charge pump rated to operate over the voltage range of
the device for byte or word operations.
When the device is code-protected, the CPU may
continue to read and write the data EEPROM memory
and read the program memory. When code-protected,
the device programmer can no longer access data or
program memory.
Additional information on the data EEPROM is
available in the “PICmicro
Reference Manual” (DS33023).
© 2005 Microchip Technology Inc.
DATA EEPROM AND FLASH
PROGRAM MEMORY
CONTROL
DD
range). These memories are not
®
Mid-Range MCU Family
Preliminary
PIC16F917/916/914/913
13.1
The EEADRL and EEADRH registers can address up
to a maximum of 256 bytes of data EEPROM or up to a
maximum of 8k words of program EEPROM.
When selecting a program address value, the MSB of
the address is written to the EEADRH register and the
LSB is written to the EEADRL register. When selecting
a data address value, only the LSB of the address is
written to the EEADRL register.
13.1.1
EECON1 is the control register for EE memory
accesses.
Control bit EEPGD determines if the access will be a
program or data memory access. When clear, as it is
when reset, any subsequent operations will operate on
the data memory. When set, any subsequent operations
will operate on the program memory. Program memory
can only be read.
Control bits RD and WR initiate read and write,
respectively. These bits cannot be cleared, only set, in
software. They are cleared in hardware at completion
of the read or write operation. The inability to clear the
WR bit in software prevents the accidental, premature
termination of a write operation.
The WREN bit, when set, will allow a write operation to
data EEPROM. On power-up, the WREN bit is clear.
The WRERR bit is set when a write operation is
interrupted by a MCLR or a WDT Time-out Reset
during normal operation. In these situations, following
Reset, the user can check the WRERR bit and rewrite
the location. The data and address will be unchanged
in the EEDATL and EEADRL registers.
Interrupt flag bit EEIF (PIR1<7>), is set when write is
complete. It must be cleared in the software.
EECON2 is not a physical register. Reading EECON2
will read all ‘0’s. The EECON2 register is used
exclusively in the data EEPROM write sequence.
EEADRL and EEADRH Registers
EECON1 AND EECON2 REGISTERS
DS41250E-page 153
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