PIC16F72-I/SO Microchip Technology Inc., PIC16F72-I/SO Datasheet - Page 57

• Manufacturer Part Number: PIC16F72-I/SO
• Description: 28 PIN, 3.5 KB FLASH, 128 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F72-I/SO

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Interface: I2C/SPI
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SOIC
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 10-1:
FIGURE 10-2:
 2002 Microchip Technology Inc.
Converter
A/D
Legend: C
VA
A/D BLOCK DIAGRAM
ANALOG INPUT MODEL
Rs
V
I leakage
R
SS
C
T
PIN
IC
HOLD
ANx
C
5 pF
PIN
(Reference
Voltage)
= input capacitance
= threshold voltage
= leakage current at the pin due to
= interconnect resistance
= sampling switch
= sample/hold capacitance (from DAC)
V
various junctions
REF
(Input Voltage)
PCFG2:PCFG0
V
V
DD
AIN
V
V
T
T
= 0.6 V
= 0.6 V
V
DD
001 or
011 or
101
000 or
010 or
100
I leakage
± 500 nA
R
IC
≤ 1 k
V
DD
CHS2:CHS0
SS R
Sampling
Switch
6V
5V
4V
3V
2V
SS
100
011
010
001
000
Sampling Switch
5 6 7 8 9 10 11
V
SS
C
= DAC capacitance
= 51.2 pF
( k Ω )
HOLD
PIC16F72
DS39597B-page 55
RA1/AN1
RA2/AN2
RA0/AN0
RA5/AN4
RA3/AN3/V
REF