PIC18F4455-I/PT Microchip Technology, PIC18F4455-I/PT Datasheet - Page 6

• Manufacturer Part Number: PIC18F4455-I/PT
• Description: IC PIC MCU FLASH 12KX16 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4455-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 24KB (12K x 16)
• Package / Case: 44-TQFP, 44-VQFP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 35
• Eeprom Size: 256 x 8
• Ram Size: 2K 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: 24 KB
• Interface Type: SPI, I2C, EAUSART
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 35
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 5.5 V
• 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, PG164120, ICE2000, ICE4000, DV164136, DM163025
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Package: 44TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 48 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT44PT3 - SOCKET TRAN ICE 44MQFP/TQFPI3-DB18F4550 - BOARD DAUGHTER ICEPIC3DM163025 - PIC DEM FULL SPEED USB DEMO BRDAC164305 - MODULE SKT FOR PM3 44TQFP444-1001 - DEMO BOARD FOR PICMICRO MCUAC164020 - MODULE SKT PROMATEII 44TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F2455/2550/4455/4550
8. Module: A/D
TABLE 1:
9. Module: DC Characteristics (BOR)
DS80220J-page 6
A06A
A06
Param
No.
The A/D offset is greater than the specified limit in
Table 28-28 of the Device Data Sheet. The
updated conditions and limits are shown in bold
text in Table 1.
Work around
Three work arounds exist.
1. Configure the A/D to use the V
The values for parameter D005 (V
Section 28.1 “DC Characteristics” of the Device
Data
BORV1:BORV0 = 11, are not applicable as the
device may reset below the minimum operating
voltage for the device.
Work around
None.
Date Codes that pertain to this issue:
All engineering and production devices.
pins for the voltage references. This is done by
setting the VCFG<1:0> bits (ADCON1<5:4>).
Symbol
E
E
OFF
OFF
Sheet,
A/D CONVERTER CHARACTERISTICS: PIC18F2455/2550/4455/4550 (INDUSTRIAL)
Offset Error
Offset Error
when
Characteristic
the
trip
REF
+ and V
point
BOR
) in
REF
for
Min
—
—
-
PIC18LF2455/2550/4455/4550 (INDUSTRIAL)
10. Module: USB
Typ
—
—
2. Perform a conversion on a known voltage
3. Increase system clock speed to 48 MHz and
Date Codes that pertain to this issue:
All engineering and production devices.
When an IN endpoint is owned by USB SIE and
the UCON register PKTDIS bit is set, if a USB NAK
event occurs on the IN endpoint before the
PKTDIS bit is clear, then after the PKTDIS is clear,
the pending IN endpoint will send out more bytes
than expected. For example, if configured to send
out 8 bytes, the SIE would actually send out
12 bytes of data.
Work around
The PKTDIS bit is set when a USB control transfer
setup packet is received. Clear this bit as soon as
possible, and clear it before turning over any IN
endpoint ownership to the SIE.
In the distributed C18 version of the USB library,
the following change should be made:
File: usbctrltrf.c, version 1.0, dated 11/19/04
Function:
void USBCtrlEPServiceComplete(void)
Required Modification:
Move UCONbits.PKTDIS = 0, which is located
at the end of the function, to the start of the
function instead.
Date Codes that pertain to this issue:
All engineering and production devices.
reference voltage and adjust the A/D result in
software.
adjust A/D settings accordingly. Higher system
clock frequencies decrease offset error.
<±2.0
<±3.5
Max
Units
LSb
LSb
© 2008 Microchip Technology Inc.
V
V
REF
REF
= V
= V
Conditions
REF
SS
and V
+ and V
DD
REF
-