PIC16F627A-I/SO Microchip Technology, PIC16F627A-I/SO Datasheet - Page 91

• Manufacturer Part Number: PIC16F627A-I/SO
• Description: IC MCU FLASH 1KX14 EEPROM 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F627A-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 1.75KB (1K x 14)
• Package / Case: 18-SOIC (7.5mm Width)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 128 x 8
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 224 B
• Interface Type: SCI/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT18SO-1 - SOCKET TRANSITION 18SOIC 300MILI3DBF648 - BOARD DAUGHTER ICEPIC3AC162053 - HEADER INTERFACE ICD,ICD2 18DIPAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

13.0
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 (SFRs). There are four SFRs used to read
and write this memory. These registers are:
• EECON1
• EECON2 (Not a physically implemented register)
• EEDATA
• EEADR
EEDATA holds the 8-bit data for read/write, and
EEADR holds the address of the EEPROM location
being accessed. PIC16F627A/628A devices have 128
bytes of data EEPROM with an address range from 0h
to 7Fh. PIC16F648A device has 256 bytes of data
EEPROM with an address range from 0h to FFh.
REGISTER 13-1:
REGISTER 13-2:
 2004 Microchip Technology Inc.
DATA EEPROM MEMORY
bit 7-0
bit 7
bit 6-0
EEDATA REGISTER (ADDRESS: 9Ah)
EEADR REGISTER (ADDRESS: 9Bh)
bit 7
EEDATn: Byte value to write to or read from Data EEPROM memory location.
Legend:
R = Readable bit
-n = Value at POR
bit 7
PIC16F627A/628A - Unimplemented Address: Must be set to ‘0’
PIC16F648A - EEADR: Set to ‘1’ specifies top 128 locations (128-256) of EEPROM Read/Write
EEADR: Specifies one of 128 locations of EEPROM Read/Write Operation
Legend:
R = Readable bit
-n = Value at POR
EEDAT7
EADR7
R/W-x
R/W-x
Operation
DD
range). This memory
EEDAT6
EADR6
R/W-x
R/W-x
EEDAT5
EADR5
R/W-x
R/W-x
Preliminary
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
PIC16F627A/628A/648A
EEDAT4
EADR4
R/W-x
R/W-x
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 for
exact limits.
When the device is code protected, the CPU can
continue to read and write the data EEPROM memory.
A
this memory.
Additional information on the data EEPROM is
available in the PICmicro
Manual (DS33023).
device
EEDAT3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
EADR3
R/W-x
R/W-x
programmer
EEDAT2 EEDAT1
EADR2
R/W-x
R/W-x
can
®
Mid-Range Reference
x = Bit is unknown
x = Bit is unknown
no
EADR1
R/W-x
R/W-x
DS40044B-page 89
longer
EEDAT0
EADR0
R/W-x
R/W-x
access
bit 0
bit 0