PIC16C71/JW Microchip Technology, PIC16C71/JW Datasheet - Page 45

• Manufacturer Part Number: PIC16C71/JW
• Description: IC MCU EPROM 1KX14 A/D 18CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C71/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: EPROM, UV
• Ram Size: 36 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Data Converters: A/D 4x8b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-CDIP (0.300", 7.62mm) Window
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -
• Other names: PIC16C71-16/JW; PIC16C71-16/JW; PIC16C71-20/JW

7.9
The ideal transfer function of the A/D converter is as fol-
lows: the first transition occurs when the analog input
voltage (V
7.10
A very good reference for understanding A/D convert-
ers is the "Analog-Digital Conversion Handbook" third
edition, published by Prentice Hall (ISBN 0-13-03-
2848-0).
FIGURE 7-7:
1997 Microchip Technology Inc.
Transfer Function
References
AIN
) is Analog V
Selected Channel
Finish Conversion
A/D Clock
ADON = 0?
Wait 2 T
ADIF = 1
ADON = 0
GO = 0?
Device in
SLEEP?
FLOWCHART OF A/D OPERATION
Acquire
= RC?
GO = 0
No
No
No
No
AD
Yes
Yes
Yes
Yes
REF
/256 (Figure 7-6).
Conversion Delayed
1 Instruction Cycle
Abort Conversion
Power-down A/D
Start of A/D
ADIF = 0
GO = 0
SLEEP
Finish Conversion
Instruction?
Wait 2 T
ADIF = 1
SLEEP
GO = 0
No
AD
FIGURE 7-6:
Yes
FEh
FFh
04h
03h
02h
01h
00h
Finish Conversion
Power-down A/D
From Sleep?
Stay in Sleep
ADIF = 1
Wake-up
GO = 0
No
A/D TRANSFER FUNCTION
Yes
Analog input voltage
PIC16C71X
Wait 2 T
AD
DS30272A-page 45