PIC18C658/CL Microchip Technology, PIC18C658/CL Datasheet - Page 13

• Manufacturer Part Number: PIC18C658/CL
• Description: IC MCU OTP 16KX16 CAN 68-PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C658/CL

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 52
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-PLCC
• For Use With: AC164308 - MODULE SKT FOR PM3 68PLCCDVA18PQ640 - DEVICE ADAPT PIC18C658 64-TQFP
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Eeprom Size: -
• Other names: Q1068347

8. Module: A/D (V
 2003 Microchip Technology Inc.
Note:
The operation of the module is clarified by the
addition of the following note to the end of
Section 18.1 (“A/D Acquisition Requirements”):
When using external voltage references
with the A/D converter, the source imped-
ance of the external voltage references
must be less than 20Ω to obtain the speci-
fied A/D resolution. Higher reference
source impedances will increase both off-
set and gain errors. Resistive voltage divid-
ers will not provide a sufficiently low source
impedance.
To maintain the best possible performance
in A/D conversions, external V
should be buffered with an operational
amplifier or other low output impedance
circuit.
References)
REF
+ and V
REF
-
REF
inputs
PIC18C658/858
DS80126C-page 13