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參數(shù)資料
| 型號(hào)： | M27C202-70N6TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 2 Mbit 128Kb x16 UV EPROM and OTP EPROM |
| 中文描述： | 2兆位存儲(chǔ)器128KB的x16紫外線和OTP存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大小： | 102K |
| 代理商： | M27C202-70N6TR |
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M27C202
4/15
Table 5. AC Measurement Conditions
High Speed
Standard
Input Rise and Fall Times
≤
10ns
≤
20ns
Input Pulse Voltages
0 to 3V
0.4V to 2.4V
Input and Output Timing Ref. Voltages
1.5V
0.8V and 2V
Figure 3. AC Testing Input Output Waveform
AI01822
3V
High Speed
0V
1.5V
2.4V
Standard
0.4V
2.0V
0.8V
Figure 4. AC Testing Load Circuit
AI01823B
1.3V
OUT
CL
CL= 30pF for High Speed
CL= 100pF for Standard
CLincludes JIG capacitance
3.3k
1N914
DEVICE
UNDER
TEST
Table 6. Capacitance
(1)
(T
A
= 25
°
C, f = 1 MHz)
Symbol
Note: 1. Sampled only, not 100% tested.
Parameter
Test Condition
Min
Max
Unit
C
IN
Input Capacitance
V
IN
= 0V
6
pF
C
OUT
Output Capacitance
V
OUT
= 0V
12
pF
DEVICE OPERATION
The operatingmodes of the M27C202 are listed in
the Operating Modes table. A single power supply
is required in the read mode. All inputs are TTL
levels except for V
PP
and 12V on A9 for Electronic
Signature.
Read Mode
The M27C202 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
(t
AVQV
) is equal to the delay from E to output
(t
ELQV
). Datais available atthe output aftera delay
of t
OE
from the falling edge of G, assuming that E
has beenlow and the addresses have been stable
for at least t
AVQV
-t
GLQV
.
Standby Mode
The M27C202 has a standby mode which reduces
the supply current from 50mA to 100
μ
A.
The M27C202 is placed in the standby mode by
applying a TTL high signal to the E input. When in
the standbymode, theoutputs are in a high imped-
ance state, independent of the G input.
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