PIC18F23K20-I/SS Microchip Technology, PIC18F23K20-I/SS Datasheet - Page 11

• Manufacturer Part Number: PIC18F23K20-I/SS
• Description: IC PIC MCU FLASH 4KX16 28-SSOP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F23K20-I/SS

• Core Size: 8-Bit
• Program Memory Size: 8KB (4K x 16)
• Core Processor: PIC
• Speed: 64MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 24
• 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 ~ 85°C
• Package / Case: 28-SSOP
• Controller Family/series: PIC18
• No. Of I/o's: 25
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 512Byte
• Cpu Speed: 64MHz
• No. Of Timers: 4
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: CCP, ECCP, EUSART, I2C, MSSP, SPI
• Maximum Clock Frequency: 64 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 11 Channel
• Package: 28SSOP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 64 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

2.6
When the LVP Configuration bit is ‘1’ (see Section 5.3
“Single-Supply ICSP Programming”), the Low-
Voltage ICSP mode is enabled. As shown in Figure 2-14,
Low-Voltage ICSP Program/Verify mode is entered by
holding PGC and PGD low, placing a logic high on PGM
and then raising MCLR/V
RB5/PGM pin is dedicated to the programming function
and ceases to be a general purpose I/O pin. Figure 2-15
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 2-14:
FIGURE 2-15:
© 2009 Microchip Technology Inc.
MCLR/V
V
PGM
PGD
PGC
DD
MCLR/V
V
PGM
PGD
PGC
DD
Entering and Exiting Low-Voltage
ICSP Program/Verify Mode
PP
V
/RE3
PP
IH
/RE3
V
PGD = Input
PGD = Input
IH
P15
ENTERING LOW-VOLTAGE
PROGRAM/VERIFY MODE
EXITING LOW-VOLTAGE
PROGRAM/VERIFY MODE
PP
/RE3 to V
V
P16
IH
P12
V
IH
P18
IH
. In this mode, the
Advance Information
2.7
The PGC pin is used as a clock input pin and the PGD
pin is used for entering command bits and data input/
output during serial operation. Commands and data are
transmitted on the rising edge of PGC, latched on the
falling edge of PGC and are Least Significant bit (LSb)
first.
2.7.1
All instructions are 20 bits, consisting of a leading 4-bit
command followed by a 16-bit operand, which depends
on the type of command being executed. To input a
command, PGC is cycled four times. The commands
needed for programming and verification are shown in
Table 2-6.
Depending on the 4-bit command, the 16-bit operand
represents 16 bits of input data or 8 bits of input data
and 8 bits of output data.
Throughout this specification, commands and data are
presented as illustrated in Table 2-7. The 4-bit com-
mand is shown Most Significant bit (MSb) first. The
command operand, or “Data Payload”, is shown
<MSB><LSB>. Figure 2-16 demonstrates how to
serially present a 20-bit command/operand to the
device.
2.7.2
The core instruction passes a 16-bit instruction to the
CPU core for execution. This is needed to set up
registers as appropriate for use with other commands.
TABLE 2-6:
PIC18F2XK20/4XK20
Core Instruction
(Shift in16-bit instruction)
Shift out TABLAT register
Table Read
Table Read, post-increment
Table Read, post-decrement
Table Read, pre-increment
Table Write
Table Write, post-increment by 2
Table Write, start programming,
post-increment by 2
Table Write, start programming
Serial Program/Verify Operation
4-BIT COMMANDS
CORE INSTRUCTION
Description
COMMANDS FOR
PROGRAMMING
DS41297F-page 11
Command
0000
0010
1000
1001
1010
1011
1100
1101
1110
1111
4-Bit