PIC18F4321-I/PT Microchip Technology, PIC18F4321-I/PT Datasheet - Page 274

• Manufacturer Part Number: PIC18F4321-I/PT
• Description: IC PIC MCU FLASH 4KX16 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4321-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 8KB (4K x 16)
• Package / Case: 44-TQFP, 44-VQFP
• 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
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: EUSART/I2C/MSSP/SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 13-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT44PT3 - SOCKET TRAN ICE 44MQFP/TQFPAC164305 - MODULE SKT FOR PM3 44TQFP444-1001 - DEMO BOARD FOR PICMICRO MCUAC164020 - MODULE SKT PROMATEII 44TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F4321 FAMILY
Even when the dedicated port is enabled, the ICSP and
ICD functions remain available through the legacy port.
When V
of the ICRST/ICV
23.9.2
PIC18F4221/4321 devices in 44-pin TQFP packages
also have the ability to change their configuration under
external control for debugging purposes. This allows
the device to behave as if it were a PIC18F2221/2321
28-pin device.
This 28-pin Configuration mode is controlled through a
single pin, NC/ICPORTS. Connecting this pin to V
forces the device to function as a 28-pin device; fea-
tures normally associated with the 40/44-pin devices
are disabled, along with their corresponding control
registers and bits. This includes PORTD and PORTE,
the SPP and the Enhanced PWM functionality of
CCP1. On the other hand, connecting the pin to V
forces the device to function in its default configuration.
The configuration option is only available when back-
ground debugging and the dedicated ICD/ICSP port
are both enabled (DEBUG Configuration bit is clear
and ICPRT Configuration bit is set). When disabled,
NC/ICPORTS is a No Connect pin.
DS39689E-page 272
Note 1: The ICPORT Configuration bit can only
IH
2: The ICPORT Configuration bit must be
is seen on the MCLR/V
28-PIN EMULATION
be programmed through the default ICSP
port.
maintained clear for all 28-pin and 40-pin
devices; otherwise, unexpected operation
may occur.
PP
pin is ignored.
PP
/RE3 pin, the state
Preliminary
DD
SS
23.10 Single-Supply ICSP Programming
The LVP Configuration bit enables Single-Supply ICSP
Programming (formerly known as Low-Voltage ICSP
Programming or LVP). When Single-Supply Program-
ming is enabled, the microcontroller can be programmed
without requiring high voltage being applied to the
MCLR/V
dedicated to controlling Program mode entry and is not
available as a general purpose I/O pin.
While programming, using Single-Supply Program-
ming, V
normal execution mode. To enter Programming mode,
V
If Single-Supply ICSP Programming mode will not be
used, the LVP bit can be cleared. RB5/KBI1/PGM then
becomes available as the digital I/O pin, RB5. The LVP
bit may be set or cleared only when using standard
high-voltage programming (V
V
standard high-voltage programming is available and
must be used to program the device.
Memory that is not code-protected can be erased using
either a block erase, or erased row by row, then written
at any specified V
erased, a block erase is required. If a block erase is to
be performed when using Single-Supply ICSP
Programming, the device must be supplied with V
4.5V to 5.5V.
DD
PP
Note 1: High-voltage programming is always
/RE3 pin). Once LVP has been disabled, only the
is applied to the PGM pin.
DD
PP
2: By default, Single-Supply ICSP Program-
3: When Single-Supply ICSP Programming
4: When LVP is enabled, externally pull the
/RE3 pin, but the RB5/KBI1/PGM pin is then
is applied to the MCLR/V
available, regardless of the state of the
LVP bit or the PGM pin, by applying V
to the MCLR pin.
ming is enabled in unprogrammed
devices (as supplied from Microchip) and
erased devices.
is enabled, the RB5 pin can no longer be
used as a general purpose I/O pin.
PGM pin to V
execution.
DD
. If code-protected memory is to be
© 2007 Microchip Technology Inc.
SS
to allow normal program
IHH
applied to the MCLR/
PP
/RE3 pin as in
DD
IHH
of