P R E L I M I N A R Y

AMD

 

 

AC CHARACTERISTICS

5.0AND 3.3 V IEEE 1149.1 INTERFACE ABSOLUTE MAXIMUM RATINGS

Storage Temperature: . . . . . . . . . . . . –65 to +150 °C

Ambient Temperature Under Bias: . . . –65 to +125 °C

Supply Voltage to AVSS

or DVSS (AVDD, DVDD): . . . . . . . . . . . . . . –0.3 to +6 V

Stresses above those listed under Absolute Maximum Ratings may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability.

OPERATING RANGES

Commercial (C) Devices

Temperature (TA) . . . . . . . . . . . . . . . . . 0°C to + 70°C

Supply Voltages (VCC,VDDT, VDDU1, VDDU2, VDDM, VDDP)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 V to 5.25 V

Supply Voltages

(AVDD, VDD5) . . . . . . . . . . . . . . . . . . . . . . . . +5 V ± 5%

All inputs within the range: VSS – 0.5 V VIN VDD + 0.1 X VDD – where V SS and VDD are appropriate reference pins for a given input pin. (See section on power supply pin descriptions.)

CL = 50 pF unless otherwise noted

Operating ranges define those limits between which the func- tionality of the device is guaranteed.

Parameter

 

 

 

 

 

Symbol

Parameter Description

Test Conditions

Min

Max

Units

t25

TCK period

 

100

 

ns

 

 

 

 

 

 

t30

TDI, TMS setup time to TCK

 

16

 

ns

 

 

 

 

 

 

t31

TDI, TMS hold time from TCK

 

10

 

ns

t32

TDO valid delay from TCK

 

3

60

ns

 

 

 

 

 

 

t34

All outputs (non-test) valid delay

 

3

60

ns

 

from TCK

 

 

 

 

t35

All outputs (non-test) float delay

 

 

70

ns

 

from TCK

Note 1

 

 

 

t36

All inputs (non-test) setup time to

 

8

 

ns

 

TCK

 

 

 

 

t37

All inputs (non-test) hold time from

 

25

 

ns

 

TCK

 

 

 

 

Note:

1. Parameter is not included in production test.

ANALOG-TO-DIGITAL (A/D)

CONVERTER CHARACTERISTICS

Resolution: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 bits

Resolution Tested: . . . . . . . . . . . . . . . . . . . . . . 4 bits

Sample Rate: . . . . . . . . . . . . . . 1.66 MSPS (600 ns)*

Recommended A/D Ref Range: . . . . 1.25 to 1.75 V**

Range of ADIN1 + ADIN2: . . . . . . . 0 to (ADREF x 2)

*User should program a 0011 in A2DT[3:0] of TCR25. **ADREF is doubled internally.

Am79C930

147

Page 147
Image 147
AMD manual ANALOG-TO-DIGITAL A/D Converter Characteristics, Am79C930 147, Tck