T80C5112-RKFCL datasheet(83/97 Pages) ATMEL

83 / 97 page

Rev. B - November 10, 2000

Preliminary

T80C5112

(1) Total drift on one part over full Voltage and Temperature range is below 20 mV

18.6. AC Parameters

18.6.1. Explanation of the AC Symbols

Each timing symbol has 5 characters. The first character is always a ÒTÓ (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:TAVLL = Time for Address Valid to ALE Low.

TLLPL = Time for ALE Low to PSEN Low.

TA =0to+70

°C (commercial temperature range); V

SS =0V;VCC =5V ± 10%;

-V ranges.

TA = -40

°Cto+85°C (industrial temperature range); V

SS =0V;

VCC =5V ± 10%; -V ranges.

TA =0to+70

°C (commercial temperature range); V

SS =0V;2.7V<VCC < 5.5 V; -L range.

TA = -40

°Cto+85°C (industrial temperature range); V

SS =0V;2.7V<VCC < 5.5 V; -L range.

Table 55. gives the maximum applicable load capacitance for Port 0, Port 1, 2 and 3, and ALE and PSEN signals.

Timings will be guaranteed if these capacitances are respected. Higher capacitance values can be used, but timings

will then be degraded.

Table 55. Load Capacitance versus speed range, in pF

Table 57., Table 60. and Table 61. give the description of each AC symbols.

Table 57., Table 59. and Table 62. give for each range the AC parameter.

Table 58., Table 60. and Table 63. give the frequency derating formula of the AC parameter. To calculate each

AC symbols, take the x value corresponding to the speed grade you need (-V or -L) and replace this value in the

formula. Values of the frequency must be limited to the corresponding speed grade:

AVin

Analog input voltage

Vss- 0.2

Vcc + 0.2

Rref

Resistance between Vref and Vss

KOhm

Vref

Value of integrated voltage source

2.43

2.49

Small variation with Vcc

and Temperature (1)

Lref

Load on integrated voltage source

KOhm

Cai

Analog input Capacitance

During sampling

Integral non linearity

lsb

Differential non linearity

0.5

lsb

Offset error

-2

lsb

Input source impedance

KOhm For 10 bit resolution at

maximum speed

-V

-L

Port 0

100

Port 1, 2, 3

ALE / PSEN

100

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

T80C5112-RKFCL 数据表(PDF) 83 Page - ATMEL Corporation

T80C5112-RKFCL 数据表(HTML) 83 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

数据表下载