MIL-M-38510/289A
6.5 Abbreviations, symbols and definitions. The abbreviations, symbols, and definitions used herein are defined in MIL-PRF-38535 and MIL-HDBK-1331, and as follows:
VCC.....................................................Supply voltage
VSS .....................................................Common or reference voltage node
CE ......................................................Chip selection, input
DIN .....................................................Data input
DOUT...................................................Data output
A0 thru A11..........................................Address input
WE.....................................................Read or write input
IOHZ ....................................................High impedance state high output current IOLZ.....................................................High impedance state low output current ICC ......................................................Supply current from VCC supply
tAVAV ...................................................Read cycle time tAVWL...................................................Address set up time tWLWH ..................................................Write pulse width tWHAX ..................................................Write recovery time
tDVWH ..................................................Data valid to end of write tWHDX ..................................................Data hold time
tAVQX...................................................Output hold time from address change tAVQV...................................................Address access time
tELQV ...................................................Chip selection to output valid tAVAV ...................................................Write cycle time tELWH...................................................Chip selection to end of write tAVWH ..................................................Address valid to end of write tELQX ...................................................Chip selection to output active
tEHQZ...................................................Chip deselection to output in high impedance
tELPU ...................................................Chip selection to power up time
tEHPD...................................................Chip deselection to power down time
tWLQZ...................................................Write enabled to output in high impedance
tWHQX ..................................................Output active from end of write
IOZH, IOZL.............................................Output leakage current
TC.......................................................Case temperature
TA.......................................................Ambient temperature
6.5.1 Timing parameter abbreviations. All timing abbreviations used lower case characters with upper case character subscripts. The initial character is always t and is followed by four descriptors. These characters specify two signal points arranged in a "from-to" sequence that define a timing interval. The two descriptors for each signal point specify the signal name and the signal transition. Thus the format is:
t |
X |
X |
X |
X |
│ |
│ |
│ |
│ |
|
Signal name from which interval is defined -------------│ │ |
│ |
│ |
||
Transition direction for first signal ---------------------------│ |
│ |
│ |
||
Signal name to which interval is defined ----------------------------│ │
Transition direction for second signal ------------------------------------│
a. Signal definitions:
A = Address
D = Data in
Q = Data out
W = Write enable
E = Chip enable
O = Output current
P = Supply current
b. Transition definitions:
H = Transition to high
L = Transition to low
V = Transition to valid
X = Transition to invalid
Z = Transition to off (high impedance) U = up
N = Down
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