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參數(shù)資料
| 型號： | M48TY-85MH1TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 3.3V-5V TIMEKEEPER CONTROLLER |
| 中文描述： | 3.3 - 5V的計時控制器 |
| 文件頁數(shù)： | 8/33頁 |
| 文件大小： | 477K |
| 代理商： | M48TY-85MH1TR |
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M48T201Y, M48T201V
8/33
READ Mode
The M48T201Y/V executes a READ Cycle when-
ever W (WRITE Enable) is high and E (Chip En-
able) is low. The unique address specified by the
address inputs (A0-A18) defines which one of the
on-chip TIMEKEEPER
registers or external
SRAM locations is to be accessed. When the ad-
dress presented to the M48T201Y/V is in the
range of 7FFFFh-7FFF0h, one of the on-board
TIMEKEEPER registers is accessed and valid
data will be available to the eight data output driv-
ers within t
AVQV
after the address input signal is
stable, providing that the E and G access times
are also satisfied. If they are not, then data access
must be measured from the latter occurring signal
(E or G) and the limiting parameter is either t
ELQV
for E or t
GLQV
for G rather than the address access
time. When one of the on-chip TIMEKEEPER reg-
isters is selected for READ, the G
CON
signal will
remain inactive throughout the READ Cycle.
When the address value presented to the
M48T201Y/V is outside the range of TIMEKEEP-
ER registers, an external SRAM location will be
selected. In this case the G signal will be passed
to the G
CON
pin, with the specified delay times of
t
AOEL
or t
OERL
.
Figure 5. G
CON
Timing When Switching Between RTC and External SRAM
AI02333
G
E
GCON
tAOEL
ADDRESS
00000h - 7FFEFh
7FFF0h - 7FFFFh
00000h - 7FFEFh
7FFF0h - 7FFFFh
tAOEH
tOERL
tRO
External SRAM
RTC
External SRAM
RTC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48TY-85PM1 | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48Z02 | 16 Kbit 2Kb x 8 ZEROPOWER SRAM |
| M48Z02-150PC1 | FILTER SAW BANDPASS 44MHZ |
| M48Z02-150PC1TR | FILTER SAW BANDPASS 44MHZ 5-SIP |
| M48Z02-150PC6 | 5V, 16 Kbit (2Kb x 8) ZEROPOWER SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48TY-85PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48Z02 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V, 16Kbit (2Kb x 8) ZEROPOWER SRAM |
| M48Z02_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V, 16Kbit (2Kb x 8) ZEROPOWER SRAM |
| M48Z02_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 V, 16 Kbit (2 Kb x 8) ZEROPOWER? SRAM |
| M48Z02_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 V, 16 Kbit (2 Kb x 8) ZEROPOWER?? SRAM |
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