Rainbow-electronics AT77C102B Bedienungsanleitung PDF herunterladen (Seite 8)

5364A–BIOM–09/05

AT77C102B

Figure 3-1. Reset

Table 3-7. Switching Performances

The following characteristics are applicable to the operating temperature -40°C ≤ Ta ≤ +85°C

Typical conditions are: nominal voltage; T

amb

= 25°C; F

PCLK

= 1 MHz; Duty cycle = 50%

load

120 pF on digital and analog outputs unless otherwise specified

Parameter Symbol Test Level Min Typ Max Unit

Clock frequency f

PCLK

I0.512MHz

Clock pulse width (high) t

HCLK

I 250 ns

Clock pulse width (low) t

LCLK

I 250 ns

Clock setup time (high)/reset falling edge t

Setup

I0ns

No data change t

NOOE

IV 100 ns

Reset pulse width high t

HRST

IV 50 ns

Table 3-8. 3.3V ±10% Power Supply

Parameter Symbol Test Level Min Typ Max Unit

Output delay from PCLK to ACKN rising edge t

PLHACKN

I 145 ns

Output delay from PCLK to ACKN falling edge t

PHLACKN

I 145 ns

Output delay from PCLK to data output Dxi t

PDATA

I 120 ns

Output delay from PCLK to analog output AVx t

PAV ID EO

I 250 ns

Output delay from OE to data high-Z t

DATAZ

IV 34 ns

Output delay from OE to data output t

ZDATA

IV 47 ns

HRST

SETUP

Reset RST

Clock PCLK

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 18 19

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