PIC18F4520-E/PT Microchip Technology, PIC18F4520-E/PT Datasheet - Page 5

• Manufacturer Part Number: PIC18F4520-E/PT
• Description: 44 PIN, 32 KB ENH FLASH, 3804 RAM, 36 I/O, PB FREE,
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4520-E/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: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16. Module: A/D
TABLE 2:
17. Module: BOD
TABLE 3:
© 2008 Microchip Technology Inc.
D005
A06A
A06
Param
Param
No.
No.
The A/D offset is greater than the specified limit in
Table 26-24 of the Device Data Sheet. The addi-
tional Parameter A06A and updated conditions
and limits are shown in bold text in Table 2.
Work around
Three work arounds exist.
1. Configure the A/D to use the V
2. Perform a conversion on a known voltage
3. Increase system clock speed to 40 MHz and
Date Codes that pertain to this issue:
All engineering and production devices.
The BOD module may reset below the minimum
operating voltage of the device when configured
for BORV1:BORV0 = 11. The updated Reset
voltage specifications are shown in bold in
Table 3.
Work around
Use the next higher BOD voltage setting to ensure
a low V
Date Codes that pertain to this issue:
All engineering and production devices.
V
pins for the voltage references. This is done by
setting the VCFG<1:0> bits (ADCON1<5:4>).
reference voltage and adjust the A/D result in
software.
adjust A/D settings accordingly. Higher system
clock frequencies decrease offset error.
Sym
E
E
BOR
Symbol
OFF
OFF
DD
Brown-out Reset Voltage
PIC18LF2420/2520/4420/4520
BORV1:BORV0 = 11 N/A 2.05 N/A
A/D CONVERTER CHARACTERISTICS: PIC18FX42X/X52X (INDUSTRIAL, EXTENDED)
is detected above 2.0V.
BROWN-OUT RESET VOLTAGE
Characteristic
Offset Error
Offset Error
Characteristic
Min Typ Max Unit
REF
+ and V
PIC18F2420/2520/4420/4520
REF
V
Min
—
—
-
PIC18LFX42X/X52X (INDUSTRIAL)
18. Module: EUSART
Typ
—
—
When performing back-to-back transmission in
9-bit mode (TX9D bit in the TXSTA register is
set), an ongoing transmission’s timing can be
corrupted
transmission) is not written immediately follow-
ing the setting of TXIF. This is because any
write to the TXSTA register results in a reset of
the baud rate timer which will effect any ongoing
transmission.
Work around
Load TX9D just after TXIF is set, either by polling
TXIF or by writing TX9D at the beginning of the
Interrupt Service Routine, or only write to TX9D
when
(TRMT = 1).
Date Codes that pertain to this issue:
All engineering and production devices.
<±1.5
<±3.5
Max
a
transmission
if
the
Units
LSb
LSb
TX9D
V
V
REF
REF
is
bit
= V
= V
Conditions
not
DS80209H-page 5
REF
SS
(for
and V
in
+ and V
the
progress
DD
REF
next
-