PIC16F684-E/ML Microchip Technology, PIC16F684-E/ML Datasheet - Page 77

• Manufacturer Part Number: PIC16F684-E/ML
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,LLCC,16PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F684-E/ML

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164324 - MODULE SKT FOR MPLAB 8DFN/16QFNXLT16QFN1 - SOCKET TRANSITION 14DIP TO 16QFN
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.0
The EEPROM data memory is readable and writable
during normal operation (full V
is not directly mapped in the register file space.
Instead, it is indirectly addressed through the Special
Function Registers. There are four SFRs used to read
and write this memory:
• EECON1
• EECON2 (not a physically implemented register)
• EEDAT
• EEADR
EEDAT holds the 8-bit data for read/write, and EEADR
holds the address of the EEPROM location being
accessed. PIC16F684 has 256 bytes of data EEPROM
with an address range from 0h to FFh.
REGISTER 10-1:
REGISTER 10-2:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
EEADR7
EEDAT7
R/W-0
R/W-0
DATA EEPROM MEMORY
EEDATn: Byte Value to Write To or Read From Data EEPROM bits
EEADR: Specifies One of 256 Locations for EEPROM Read/Write Operation bits
EEADR6
EEDAT6
R/W-0
R/W-0
EEDAT: EEPROM DATA REGISTER
EEADR: EEPROM ADDRESS REGISTER
DD
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
EEADR5
range). This memory
EEDAT5
R/W-0
R/W-0
EEADR4
EEDAT4
R/W-0
R/W-0
U = Unimplemented bit, read as ‘0’
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
‘0’ = Bit is cleared
EEADR3
EEDAT3
R/W-0
R/W-0
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 EEPROM
data memory is rated for high erase/write cycles. The
write time is controlled by an on-chip timer. The write
time will vary with voltage and temperature as well as
from chip-to-chip. Please refer to AC Specifications in
Section 15.0 “Electrical Specifications” for exact
limits.
When the data memory is code-protected, the CPU
may continue to read and write the data EEPROM
memory. The device programmer can no longer access
the data EEPROM data and will read zeroes.
EEADR2
EEDAT2
R/W-0
R/W-0
x = Bit is unknown
x = Bit is unknown
PIC16F684
EEADR1
EEDAT1
R/W-0
R/W-0
DS41202F-page 75
EEADR0
EEDAT0
R/W-0
R/W-0
bit 0
bit 0