PIC18F4423-E/ML Microchip Technology, PIC18F4423-E/ML Datasheet - Page 14
![16KB, Flash, 768bytes-RAM, 36I/O, 8-bit Family,nanoWatt 44 QFN 8x8x0.9mm TUBE](/photos/6/81/68122/150-44-qfn_sml.jpg)
PIC18F4423-E/ML
Manufacturer Part Number
PIC18F4423-E/ML
Description
16KB, Flash, 768bytes-RAM, 36I/O, 8-bit Family,nanoWatt 44 QFN 8x8x0.9mm TUBE
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F2221-ISO.pdf
(46 pages)
2.PIC18F2423-ISP.pdf
(54 pages)
3.PIC18F2423-ISP.pdf
(8 pages)
4.PIC18F2423-ISP.pdf
(34 pages)
Specifications of PIC18F4423-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 13x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-QFN
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