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參數(shù)資料
| 型號(hào)： | BR93LC56RF |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | 2,048-Bit Serial Electrically Erasable PROM |
| 中文描述： | 2,048位串行電可擦除可編程ROM |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 127K |
| 代理商： | BR93LC56RF |
8
Memory ICs
BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV
CS
SK
DI
DO
High-Z
0
0
1
1
A6
A5
A1
A0
D15
D14
D1
D0
1
2
4
11
12
27
STATUS
t
CS
READY
BUSY
t
SV
t
E / W
Fig. 4 Write cycle timing (WRITE)
t
CS
CS
SK
DI
DO
High-Z
0
0
1
0
1
D15
D14
D1
D0
1
2
5
12
27
STATUS
READY
BUSY
t
SV
t
E / W
Fig. 5 Write all address cycle timing (WRAL)
(STATUS)
After time t
CS
following the fall of CS, after input of the
write command), if CS is set to HIGH, the write execute
= BUSY (LOW) and the command wait status READY
(HIGH) are output.
If in the command wait status (STATUS = READY), the
next command can be performed within the time t
E / W
.
Thus, if data is input via SK and DI with CS = HIGH in
the t
E / W
period, erroneous operations may be per-
formed. To avoid this, make sure that DI = LOW when
CS = HIGH. (Caution is especially important when
common input ports are used.) This applies to all of the
write commands.
(7) All address write (Figure 5)
With this command, the input 16-bit data is written
simultaneously to all of the addresses (128 words).
Rather than writing one word at a time, in succession,
data is written all at one time, enabling a write time of
t
E / W
.
(8) Write disable (Figure 6)
When the power supply is turned on, the IC enters the
write disable status when a write enable command is
issued. If a write disable command is issued at this
point, however, the IC enters the write disabled status,
just as when the power is first turned on. Subsequent
write commands are cancelled by the software, but
read commands may be executed. In the write enable
status, writing begins even if a write command is
entered accidentally. To prevent errors of this type, we
recommend executing a write disable command after
writing has been completed.
1
0
0
0
0
CS
SK
DI
DO
High-Z
Fig. 6 Write disable cycle timing (WDS)
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相關(guān)代理商/技術(shù)參數(shù) |
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| BR93LC56RFJ-W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microwire Serial EEPROM |
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