T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 151

• Manufacturer Part Number: T89C51CC01
• Description: Enhanced 8-Bit Microcontroller
• Manufacturer: Atmel

DC Parameters for A/D Converter
Table 122. DC Parameters for AD Converter in Precision Conversion
AC Parameters
Explanation of the AC
Symbols
4129K–CAN–01/05
Symbol
Rref
Varef
AVin
DNL
INL
Cai
Rai
OE
(2)
Parameter
Analog input voltage
Resistance between Vref and Vss
Reference voltage
Analog input Capacitance
Analog input Resistor
Integral non linearity
Differential non linearity
Offset error
Notes:
Each timing symbol has 5 characters. The first character is always a “T” (stands for
time). The other characters, depending on their positions, stand for the name of a signal
or the logical status of that signal. The following is a list of all the characters and what
they stand for.
Example: T
T
T
(Load Capacitance for port 0, ALE and PSEN = 60 pF; Load Capacitance for all other
outputs = 60 pF.)
Table 123, Table 126 and Table 129 give the description of each AC symbols.
Table 124, Table 128 and Table 130 give for each range the AC parameter.
Table 125, Table 128 and Table 131 give the frequency derating formula of the AC
parameter for each speed range description. To calculate each AC symbols: Take the x
value and use this value in the formula.
Example: T
x = 30 ns
T = 50 ns
T
A
A
CCIV
T
= -40°C to +85°C; V
= -40°C to +85°C; V
LLPL
= 4T - x = 170 ns
= Time for ALE Low to PSEN Low.
1. Typicals are based on a limited number of samples and are not guaranteed.
2. With ADC enabled.
AVLL
LLIV
and 20 MHz, Standard clock.
= Time for Address Valid to ALE Low.
Vss- 0.2
SS
SS
Min
2.40
12
-2
= 0V; V
= 0V; V
CC
CC
Typ
= 5V ±10%; F = 0 to 40 MHz.
= 5V ± 10%.
0.5
16
60
1
(1)
Vref
Max
3.00
400
24
2
1
2
+ 0.2
Unit
kΩ
lsb
lsb
lsb
pF
V
Ω
V
T89C51CC01
Test Conditions
During sampling
During sampling
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