PIC18F4420-E/ML Microchip Technology, PIC18F4420-E/ML Datasheet - Page 21

• Manufacturer Part Number: PIC18F4420-E/ML
• Description: IC MCU FLASH 8KX16 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4420-E/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TABLE 3-7:
 2010 Microchip Technology Inc.
Step 1: Direct access to data EEPROM.
Step 2: Set the data EEPROM Address Pointer.
Step 3: Load the data to be written.
Step 4: Enable memory writes.
Step 5: Initiate write.
Step 6: Poll WR bit, repeat until the bit is clear.
Step 7: Hold PGC low for time P10.
Step 8: Disable writes.
Repeat Steps 2 through 8 to write more data.
Note 1: See
Command
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0010
0000
4-Bit
Figure 4-4
9E A6
9C A6
0E <Addr>
6E A9
OE <AddrH>
6E AA
0E <Data>
6E A8
84 A6
82 A6
50 A6
6E F5
00 00
<MSB><LSB>
94 A6
PROGRAMMING DATA MEMORY
Data Payload
for details on shift out data timing.
BCF
BCF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BSF
MOVF
MOVWF
NOP
Shift out data
BCF
PIC18F2XXX/4XXX FAMILY
EECON1, EEPGD
EECON1, CFGS
<Addr>
EEADR
<AddrH>
EEADRH
<Data>
EEDATA
EECON1, WREN
EECON1, WR
EECON1, W, 0
TABLAT
EECON1, WREN
(1)
Core Instruction
DS39622L-page 21