PIC18F4420T-I/PT Microchip Technology, PIC18F4420T-I/PT Datasheet - Page 28

• Manufacturer Part Number: PIC18F4420T-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4420T-I/PT

• Rohs Compliant: YES
• 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 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2XXX/4XXX FAMILY
5.0
The PIC18F2XXX/4XXX family devices have several
Configuration Words. These bits can be set or cleared to
select various device configurations. All other memory
areas should be programmed and verified prior to setting
the Configuration Words. These bits may be read out
normally, even after read or code protection. See
Table 5-1
and
5.1
A user may store identification information (ID) in eight
ID locations, mapped in 200000h:200007h. It is recom-
mended that the most significant nibble of each ID be
Fh. In doing so, if the user code inadvertently tries to
execute from the ID space, the ID data will execute as
a NOP.
DS39622L-page 28
Table 5-3
CONFIGURATION WORD
ID Locations
for a list of Configuration bits and Device IDs,
for the Configuration bit descriptions.
values. In such cases, the Most Significant bit of the
5.2
The Device ID Word for the PIC18F2XXX/4XXX family
devices is located at 3FFFFEh:3FFFFFh. These bits
may be used by the programmer to identify what device
type is being programmed and read out normally, even
after code or read protection.
In some cases, devices may share the same DEVID
device revision, REV4 (DEVID1<4>), will need to be
examined to completely determine the device being
accessed.
See
FIGURE 5-1:
Table 5-2
Device ID Word
for a complete list of Device ID values.
Set TBLPTR = 3FFFFE
READ DEVICE ID WORD FLOW
with Post-Increment
with Post-Increment
Read Low Byte
Read High Byte
 2010 Microchip Technology Inc.
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