PIC18F2539-I/SO Microchip Technology, PIC18F2539-I/SO Datasheet - Page 288

• Manufacturer Part Number: PIC18F2539-I/SO
• Description: IC MCU FLASH 12KX16 EE AD 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2539-I/SO

• Core Size: 8-Bit
• Program Memory Size: 24KB (12K 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: 21
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1408 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC18
• No. Of I/o's: 21
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1.375KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1408 B
• Interface Type: I2C, SPI, AUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 16 bit
• 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: DV164005, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5 bit
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL
• Lead Free Status / Rohs Status: Details

PIC18FXX39
TABLE 23-22: A/D CONVERSION REQUIREMENTS
DS30485A-page 286
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 50Ω. See Section 18.0 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 → sample
Characteristic
PIC18FXXXX
PIC18LFXXXX
Preliminary
CY
cycle.
Min
1.6
2.0
10
11
—
5
(Note 3)
20
Max
6.0
12
—
—
(4)
Units
T
µs
µs
µs
µs
AD
 2002 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