- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45389 > MSM6542-02RS (OKI ELECTRIC INDUSTRY CO LTD) 0 TIMER(S), REAL TIME CLOCK, PDIP18 PDF資料下載
參數(shù)資料
| 型號： | MSM6542-02RS |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP18 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-18 |
| 文件頁數(shù)： | 4/54頁 |
| 文件大?。?/td> | 406K |
| 代理商： | MSM6542-02RS |
第1頁第2頁第3頁當前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
Semiconductor
MSM6542-01/02/03
79
DESCRIPTION OF PINS
D
0 to D3 (Data bus pins 0 to 3)
These input pins connected to the data bus of a microcomputer are used for the microcomputer
to read and write registers. The interface uses the positive logic. When CS
0 is low, CS1 is high,
RD is low, and WR is high (for the 68-xxx system, CS
0 is low, CS1 is high, R/W is high, and E is
high), these data bus pins are in the output mode. In the other cases, they are in the high
impedance status.
A
0 to A3 (Address bus pins 0 to 3)
These input pins connected to the address bus of a microcomputer specify a register used by the
microcomputer for read or write. The address data specified by these pins is used in conjunction
with the input to the ALE pin.
ALE (Address Latch Enable)
This input pin is for address and CS
0.
When the ALE pin is high, the address bus data and CS
0 are read into the IC. When it is low,
the address data and CS
0 read at ALE = H are retained in the IC. CS1 functions independently
of the ALE pin.
When using an MSC-48-, MSC-51-, or 8085-based microcomputer having an ALE output pin,
connect this pin to the ALE output pin of the microcomputer. When a four-bit microcomputer
shares the four address bus pins, A
0 to A3, with another peripheral IC, the ALE pin on this IC
can be used to specify it.
When the microcomputer has no ALE output pin, connect the ALE input pin on this IC to the
V
DD.
WR [R/W] (WRITE [READ/WRITE])
This input pin is connected to the WR pin for the 80-based CPU or the R/W pin for the 68-based
CPU.
RD [E] (READ [E])
This input pin is connected to the RD pin for the 80-based CPU or the E pin for the 68-based CPU.
CS
0, CS1 (Chip select pins 0 and 1)
These input pins enable or disable input of ALE, WR (R/W), and RD (E). When CS
0 is low and
CS
1 is high, these inputs are enabled. In the other combinations, the IC unconditionally assumes
that ALE is low and WR and RD are high (for the 68-based CPU, E is low). However, CS
0 needs
to operate in conjunction with ALE and CS
1 operates independently of ALE. Connect CS1 to the
power supply voltage detection pin. For more information, see the descriptions in "USAGE"
and "USE OF CS
1."
相關PDF資料 |
PDF描述 |
|---|---|
| MSM6542-03GS-VK | 0 TIMER(S), REAL TIME CLOCK, PDSO24 |
| MSM6542-03RS | 0 TIMER(S), REAL TIME CLOCK, PDIP24 |
| MSM65513-GS-VK | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP64 |
| MSM65513-JS | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC68 |
| MSM65513-XXSS | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP64 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MSM6542-03 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:REAL TIME CLOCK WITH PERIODIC AND ALARM OUTPUT |
| MSM6544 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:42-DOT LCD DRIVER |
| MSM6544GS-2KR1 | 制造商:ROHM Semiconductor 功能描述: |
| MSM6545 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller |
| MSM6545L | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復。