PIC18F452-E/PT Microchip Technology, PIC18F452-E/PT Datasheet - Page 290

• Manufacturer Part Number: PIC18F452-E/PT
• Description: IC MCU CMOS 40MHZ 16K FLSH44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F452-E/PT

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 34
• 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 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Controller Family/series: PIC18
• No. Of I/o's: 34
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1.5KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Package: 44TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 34
• Interface Type: I2C/SPI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18FXX2
TABLE 22-22: A/D CONVERSION REQUIREMENTS
DS39564C-page 288
130
131
132
135
Note 1: ADRES register may be read on the following T
Param
No.
2: The time for the holding capacitor to acquire the “New” input voltage, when the new input value has not
3: On the next Q4 cycle of the device clock.
4: The time of the A/D clock period is dependent on the device frequency and the T
T
T
T
T
Symbol
AD
CNV
ACQ
SWC
changed by more than 1 LSB from the last sampled voltage. The source impedance ( R
is 50 . See Section 17.0 for more information on acquisition time consideration.
A/D clock period
Conversion time
(not including acquisition time) (Note 1)
Acquisition time (Note 2)
Switching Time from convert
Characteristic
PIC18FXXX
PIC18FXXX
sample
CY
cycle.
Min
1.6
2.0
10
11
—
5
(Note 3)
20
Max
6.0
12
—
—
(4)
Units
T
AD
s
s
s
s
© 2006 Microchip Technology Inc.
T
A/D RC mode
V
V
OSC
REF
REF
AD
clock divider.
= V
= V
S
based
) on the input channels
Conditions
DD
DD
= 5.0V
= 2.5V