cop87l88rd National Semiconductor Corporation, cop87l88rd Datasheet - Page 6

• Manufacturer Part Number: cop87l88rd
• Description: 8-bit Cmos Otp Microcontrollers With 16k Or 32k Memory And 8-channel A/d With Prescaler
• Manufacturer: National Semiconductor Corporation

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Resolution
Absolute Accuracy
Non-Linearity
Differential Non-Linearity
Common Mode Input Range (Note 12)
DC Common Mode Error
Off Channel Leakage Current
On Channel Leakage Current
A/D Clock Frequency (Note 11)
Converison Time (Note 10)
Internal Reference Resistance
Tum-on Time (Note 13)
A/D Converter Specifications
Note 10: Conversion Time includes 7 A/D clock cycles sample and hold time.
Note 11: See Prescaler description.
Note 12: For V
log input voltages below ground or above the V
diode to conduct — especially at elevated temperatures, and cause errors for analog inputs near full-scale. The spec allows 50 mV forward bias of either diode. This
means that as long as the analog V
V
Note 13: Time or internal reference reistance to turn on and settle after coming out of HALT or IDLE mode.
V
DC
CC
input voltage range will therefore require a minimum supply voltage of 4.950 V
= 5V
±
IN
10%, (V
Parameter
(−)
>
= V
SS
IN
–0.050V)
(+) the digital output code will be 0000 0000. Two on-chip diodes are tied to each analog input. The diodes will forward conduct for ana-
IN
does not exceed the supply voltage by more than 50 mV, the output code will be correct. To achieve an absolute 0 V
Any Input
CC
supply. Be careful, during testing at low V
Deviation from the Best Straight Line
FIGURE 3. MICROWIRE/PLUS Timing
(V
CC
+ 0.050V)
Conditions
6
DC
over temperature variations, initial tolerance and loading.
CC
levels (4.5V), as high level analog inputs (5V) can cause this input
DS012526-4
GND
Min
0.1
Typ
17
1
1
±
Max
1.67
V
±
±
±
1/2
8
CC
2
2
1
2
1
1
A/D Clock Cycles
Units
MHz
LSB
LSB
LSB
LSB
Bits
µA
µA
µs
V
DC
to 5