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參數(shù)資料
| 型號： | V30218P |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Ultra Low Power 1-Bit 32 kHz RTC |
| 中文描述： | 超低功耗1位32 kHz的時鐘 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 442K |
| 代理商： | V30218P |
Typical Applications
V3021 Interfaced with Intel CPU (RD/WR Pulse)
8088
WR
RD
BUS A/D 0-7
BUS ADDRESS A8-A15
Decoder
CS RD WR
I/O
V3021
Fig. 13
to other peripherals
and memory
D0
V3021 Interfaced with Motorola CPU (Advanced R/W)
68000
R/W
LDS
BUS A/D 0-7
BUS ADDRESS A8-A15
Decoder
CS RD WR
I/O
V3021
Fig. 14
to other peripherals
and memory
D0
11
3 Wire Serial Interface
CS
μP
I/O
WR
RD
V3021
CLK
DATA
Strobe
1) & 2)
Fig. 15
1) With strobe low bits are written to the V3021, and
with strobe high bits are read from the V3021
2) For serial ports with byte transfer only, an address
command cycle should be combined with every
data cycle to give 8 address bits and 8 data bits. For
example to read the current minutes, write address
data F + 3 (1111 + 0011) and then read 8 data bits.
CS
μP
RD
I/O
V3021
Port A.0
Port A.1
Port A.2
WR
V
SS
R
V3021
Battery Switch Over Circuit
Fig. 16
* Use Schottky barrier diodes. The
BAT85 has a typical V of 250 mV at an
i of 1 mA.
The reverse current is typically 200 nA
at a V of 5 V. The reverse recovery time
is 5 ns. For surface mount applications
use the Philips BAT17 in SOT-23 or
other.
D0 of data bus
V
SS
V
DD
I/O
CS
Motorola BS107A or 3N171
V3021
3 V
+
BAT85*
BAT85*
+5V
+5V
1M
W
相關PDF資料 |
PDF描述 |
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| V30218S | Ultra Low Power 1-Bit 32 kHz RTC |
| V302AS32 | High Energy Metal-Oxide Arrester Blocks |
| V31CP20 | Tubular Metal-Oxide Varistors |
| V320MTC | V320 8-Bit Registered Bus Transceiver |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| V30218S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
| V3021DL8A | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
| V3021SO8A | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
| V3021SO8B | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
| V3021XDL8A | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
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