PIC18F23K20-E/ML Microchip Technology, PIC18F23K20-E/ML Datasheet - Page 10

• Manufacturer Part Number: PIC18F23K20-E/ML
• Description: 8 KB Enh Flash, 768 RAM, 25 I/O Pb Free, Nanowatt XLP 28 QFN 6x6mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F23K20-E/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2XK20/4XK20
2.4
Figure 2-11 shows the high-level overview of the
programming process. First, a Bulk Erase is performed.
Next, the code memory, ID locations and data
EEPROM are programmed. These memories are then
verified to ensure that programming was successful. If
no errors are detected, the Configuration bits are then
programmed and verified.
FIGURE 2-11:
DS41297F-page 10
High-Level Overview of the
Programming Process
Program Data EE
Configuration Bits
Program Memory
Configuration Bits
Verify Program
Perform Bulk
Program IDs
Verify Data
Verify IDs
Program
HIGH-LEVEL
PROGRAMMING FLOW
Erase
Verify
Done
Start
Advance Information
2.5
As shown in Figure 2-12, the High-Voltage ICSP
Program/Verify mode is entered by holding PGC and
PGD low and then raising MCLR/V
(high voltage). Once in this mode, the code memory,
data EEPROM, ID locations and Configuration bits can
be accessed and programmed in serial fashion.
Figure 2-13 shows the exit sequence.
The sequence that enters the device into the Program/
Verify mode places all unused I/Os in the high-impedance
state.
FIGURE 2-12:
FIGURE 2-13:
MCLR/V
V
PGD
PGC
DD
MCLR/V
D110
V
PGD
PGC
DD
Entering and Exiting High-Voltage
ICSP Program/Verify Mode
D110
PP
PP
/RE3
/RE3
PGD = Input
PGD = Input
P13
ENTERING HIGH-VOLTAGE
PROGRAM/VERIFY MODE
P1
EXITING HIGH-VOLTAGE
PROGRAM/VERIFY MODE
© 2009 Microchip Technology Inc.
P16
P1
P12
P17
PP
/RE3 to V
IHH