PIC18F4423-E/P Microchip Technology, PIC18F4423-E/P Datasheet - Page 14

• Manufacturer Part Number: PIC18F4423-E/P
• Description: 16KB, Flash, 768bytes-RAM, 36I/O, 8-bit Family,nanoWatt 40 PDIP .600in TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4423-E/P

• 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 13x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2423/2523/4423/4523
FIGURE 3-4:
FIGURE 3-5:
DS39759A-page 14
PGC
PGD
1
1
4-Bit Command
2
1
3
1
PROGRAM CODE MEMORY FLOW
TABLE WRITE AND START PROGRAMMING INSTRUCTION TIMING (1111)
4
1
P5
LoopCount + 1
LoopCount =
1
n
N = 1
2
n
3
16-Bit Data Payload
n
4
n
N = N + 1
5
n
6
n
PGD = Input
15
n
16
No
n
No
P5A
Start Write Sequence
Buffer at <Addr>
4-Bit Command
1
High until Done
Hold PGC Low
and Hold PGC
0
Load 2 Bytes
for Time P10
and Wait P9
Device for
Configure
locations
written?
2
to Write
Writes
done?
0
Start
bytes
Done
All
All
3
Yes
Yes
0
N = 1
LoopCount = 0
0
Programming Time
P9
© 2005 Microchip Technology Inc.
4
P10
Data Payload
1
0
16-Bit
2
0
3
0