PIC18F4220-I/P Microchip Technology Inc., PIC18F4220-I/P Datasheet - Page 75
PIC18F4220-I/P
Manufacturer Part Number
PIC18F4220-I/P
Description
Microcontroller; 4 KB Flash; 512 RAM; 256 EEPROM; 36 I/O; 40-Pin-PDIP
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4220-IP.pdf
(388 pages)
Specifications of PIC18F4220-I/P
A/d Inputs
13-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
4K Bytes
Ram Size
512 Bytes
Speed
40 MHz
Timers
1-8-bit, 3-16-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
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Part Number:
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SST
Quantity:
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REGISTER 6-1:
2003 Microchip Technology Inc.
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
EECON1 REGISTER
Legend:
R = Readable bit
- n = Value at POR ‘1’ = Bit is set
bit 7
EEPGD: Flash Program or Data EEPROM Memory Select bit
1 = Access program Flash memory
0 = Access data EEPROM memory
CFGS: Flash Program/Data EE or Configuration Select bit
1 = Access configuration registers
0 = Access program Flash or data EEPROM memory
Unimplemented: Read as ‘0’
FREE: Flash Row Erase Enable bit
1 = Erase the program memory row addressed by TBLPTR on the next WR command
0 = Perform write only
WRERR: EEPROM Error Flag bit
1 = A write operation was prematurely terminated (any Reset during self-timed programming)
0 = The write operation completed normally
WREN: Write Enable bit
1 = Allows erase or write cycles
0 = Inhibits erase or write cycles
WR: Write Control bit
1 = Initiates a data EEPROM erase/write cycle or a program memory erase cycle or write
0 = Write cycle completed
RD: Read Control bit
1 = Initiates a memory read (Read takes one cycle. RD is cleared in hardware. The RD bit can
0 = Read completed
EEPGD
R/W-x
Note:
(cleared by completion of erase operation – TBLPTR<5:0> are ignored)
cycle. (The operation is self-timed and the bit is cleared by hardware once write is
complete. The WR bit can only be set (not cleared) in software.)
only be set (not cleared) in software. RD bit cannot be set when EEPGD = 1.)
When a WRERR occurs, the EEPGD and CFGS bits are not cleared. This allows
tracing of the error condition.
CFGS
R/W-x
S = Settable only
PIC18F2220/2320/4220/4320
U-0
—
R/W-0
FREE
U = Unimplemented bit, read as ‘0’ W = Writable bit
‘0’ = Bit is cleared
WRERR
R/W-x
WREN
R/W-0
R/S-0
WR
x = Bit is unknown
DS39599C-page 73
R/S-0
RD
bit 0
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