AMD Am79C930 - Manual (Page 147)

P R E L I M I N A R Y AMD
147 Am79C930
AC CHARACTERISTICS
5.0 AND 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 AV
SS
or DV
SS
(AV
DD
, DV
DD
): –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 (T
A
) 0
°
C to + 70
°
C . . . . . . . . . . . . . . . . .
Supply Voltages (V
CC
,V
DDT
, V
DDU1
, V
DDU2
, V
DDM
, V
DDP
)
3.0 V to 5.25 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Voltages
(AV
DD
, V
DD5
) +5 V
±
5% . . . . . . . . . . . . . . . . . . . . . . . .
All inputs within the range: V
SS
– 0.5 V
≤
V
IN
≤
V
DD
+ 0.1 X
V
DD
– where V
SS
and V
DD
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
t
25
TCK period 100 ns
t
30
TDI, TMS setup time to TCK ↑ 16 ns
t
31
TDI, TMS hold time from TCK ↑ 10 ns
t
32
TDO valid delay from TCK
↓
3 60 ns
t
34
All outputs (non-test) valid delay 3 60 ns
from TCK
↓
t
35
All outputs (non-test) float delay 70 ns
from TCK
↓
Note 1
t
36
All inputs (non-test) setup time to 8 ns
TCK
↑
t
37
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.