PIC16F628A-I/ML Microchip Technology, PIC16F628A-I/ML Datasheet - Page 91

• Manufacturer Part Number: PIC16F628A-I/ML
• Description: IC MCU FLASH 2KX14 EEPROM 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F628A-I/ML

• Core Size: 8-Bit
• Program Memory Size: 3.5KB (2K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: FLASH
• 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
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Controller Family/series: PIC16F
• No. Of I/o's: 16
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 224Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• 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: 1 x 16 bit
• 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: AC164324 - MODULE SKT FOR MPLAB 8DFN/16QFNXLT28QFN3 - SOCKET TRAN ICE 18DIP/28QFNI3DBF648 - BOARD DAUGHTER ICEPIC3AC164033 - ADAPTER 28QFN TO 18DIPAC162053 - HEADER INTERFACE ICD,ICD2 18DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Data Converters: -
• Lead Free Status / Rohs Status: Details

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. The PIC16F648A device has 256 bytes of data
EEPROM with an address range from 0h to FFh.
REGISTER 13-1:
REGISTER 13-2:
© 2009 Microchip Technology Inc.
DATA EEPROM MEMORY
bit 7-0
bit 7
bit 6-0
EEDATA – EEPROM DATA REGISTER (ADDRESS: 9Ah)
EEADR – EEPROM ADDRESS REGISTER (ADDRESS: 9Bh)
bit 7
EEDATn: Byte value to Write to or Read from data EEPROM memory location.
bit 7
PIC16F627A/628A
Unimplemented Address: Must be set to ‘0’
PIC16F648A
EEADR: Set to ‘1’ specifies top 128 locations (128-255) of EEPROM Read/Write Operation
EEADR: Specifies one of 128 locations of EEPROM Read/Write Operation
Legend:
R = Readable bit
-n = Value at POR
Legend:
R = Readable bit
-n = Value at POR
EEDAT7
EADR7
R/W-x
R/W-x
DD
range). This memory
EEDAT6
EADR6
R/W-x
R/W-x
EEDAT5
EADR5
R/W-x
R/W-x
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
device programmer can no longer access this memory.
Additional information on the data EEPROM is
available in the PIC
(DS33023).
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
®
EEDAT2 EEDAT1
EADR2
Mid-Range Reference Manual
R/W-x
R/W-x
x = Bit is unknown
x = Bit is unknown
EADR1
R/W-x
R/W-x
DS40044G-page 91
EEDAT0
EADR0
R/W-x
R/W-x
bit 0
bit 0