Philips Semiconductors
Preliminary specification
80C51 8-bit microcontroller
8K/256 OTP, 8 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O, low voltage (2.7V鈥?.5V), low power
P87C552
Offset
error
OS
e
Gain
error
G
e
1023
1022
1021
1020
1019
1018
(2)
7
Code
Out
6
(1)
5
(5)
4
(4)
3
(3)
2
1
1 LSB
(ideal)
0
1
2
3
4
5
6
7
1018
1019
1020
1021
1022
1023
1024
AV
IN
(LSB
ideal
)
Offset
error
OS
e
(1) Example of an actual transfer curve.
(2) The ideal transfer curve.
(3) Differential non-linearity (DL
e
).
(4) Integral non-linearity (IL
e
).
(5) Center of a step of the actual transfer curve.
1 LSB =
AV
REF+
鈥?/div>
AV
REF鈥?/div>
1024
SU00212
Figure 47. ADC Conversion Characteristic
1999 Mar 30
64
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