M27C516 Просмотр технического описания (PDF) - STMicroelectronics
Номер в каталоге
Компоненты Описание
производитель
M27C516 Datasheet PDF : 13 Pages
| |||
M27C516
Figure 2A. LCC Connections
Q12
Q11
Q10
Q9
Q8
VSS 12
NC
Q7
Q6
Q5
Q4
1 44
M27C516
23
A13
A12
A11
A10
A9
34 VSS
NC
A8
A7
A6
A5
AI00934
Figure 2B. TSOP Connections
A9
A10
A11
A12
A13
A14
NC
NC
P
VCC
VPP
E
DQ15
DQ14
DQ13
DQ12
DQ11
DQ10
DQ9
DQ8
1
40 VSS
A8
A7
A6
A5
A4
A3
A2
A1
10 M27C516 31 A0
11 (Normal) 30 G
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
20
21 VSS
AI01600
Table 1. Signal Names
A0-A14
Address Inputs
Q0-Q15
Data Outputs
E
Chip Enable
G
Output Enable
P
Program Enable
VCC
Supply Voltage
VPP
Program Supply
VSS
Ground
NC
Not Connected Internally
DEVICE OPERATION
The operating modes of the M27C516 are listed in
the Operating Modes table. A single power supply
is required in the read mode. All inputs are TTL
levels except for G and 12V on A9 for Electronic
Signature.
Read Mode
The M27C516 has two control functions, both of
which must be logically active in order to obtain
data at the outputs. Chip Enable (E) is the power
control and should be used for device selection.
Output Enable (G) is the output control and should
be used to gate data to the output pins, indepen-
dent of device selection. Assuming that the ad-
dresses are stable, the address access time
(tAVQV) is equal to the delay from E to output
(tELQV). Data is available at the output after a delay
of tGLQV from the falling edge of G, assuming that
E has been low and the addresses have been sta-
ble for at least tAVQV-tGLQV.
2/13
Share Link: 