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參數資料
| 型號： | MSM6242BGS-K |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 時鐘/數據恢復及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO24 |
| 封裝： | 0.430 INCH, 1.27 MM PITCH, PLASTIC, SOP-24 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 295K |
| 代理商： | MSM6242BGS-K |
1/23
OKI Semiconductor
MSM6242B
FEDL6242B-02
DESCRIPTION
The MSM6242B is a silicon gate CMOS Real
Time Clock/Calendar for use in direct bus-
connection Microprocessor/Microcomputer
applications. An on-chip 32.768 kHz crystal
oscillator time base is divided to provide ad-
dressable 4-bit I/O data for SECONDS, MIN-
UTES, HOURS, DAY OF WEEK, DATE,
MONTH and YEAR. Data access is controlled
by 4-bit address, chip selects (CS0, CS1),
WRITE, READ, and ALE. Control Registers
D, E and F provide for 30 SECOND error
adjustment, INTERRUPT REQUEST (IRQ
FLAG) and BUSY status bits, clock STOP,
HOLD, and RESET FLAG bits, 4 selectable
INTERRUPTS rates are available at the STD.P
(STANDARD PULSE) output utilizing Con-
trol Register inputs T0, T1 and the ITRPT/
STND (INTERRUPT/STANDARD). Mask-
ing of the interrupt output (STD.P) can be
accomplished via the MASK bit.
The
MSM6242B can operate in a 12/24 hour for-
mat and Leap Year timing is automatic.
The MSM6242B normally operates from a 5 V
±10% supply at –40 to +85°C. Battery backup
operation down to 2.0 V allows continuation
of time keeping when main power is off. The
MSM6242B is offered in a 18-pin plastic DIP
and a 24-pin plastic Small Outline package.
FEATURES
DIRECT MICROPROCESSOR/MICROCONTROLLER BUS CONNECTION
TIME
MONTH
DATE
YEAR
DAY OF WEEK
23:59:59
12
31
80
7
4-bit data bus
4-bit address bus
READ, WRITE, ALE and CHIP SELECT
INPUTS
Status registers – IRQ and BUSY
Selectable interrupt outputs – 1/64
second, 1 second, 1 minute, 1 hour
Interrupt masking
32.768 kHz crystal controlled operation
12/24 hour format
Auto leap year
±30 second error correction
Single 5 V supply
Battery backup down to V
DD = 2.0 V
Low power dissipation:
20
W max at V
DD = 2 V
150
W max at V
DD = 5 V
Package: 18-pin plastic DIP (DIP18-P-300-2.54) (MSM6242BRS)
24-pin plastic SOP (SOP24-P-430-1.27-K) (MSM6242BGS-K)
OKI Semiconductor
MSM6242B
DIRECT BUS CONNECTED CMOS REAL TIME CLOCK/CALENDAR
Issue Date: Jun. 17, 2002
FEDL6242B-02
相關PDF資料 |
PDF描述 |
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| MSM63188-XXX | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, UUC159 |
| MSM63188-XXXGS-BK | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP176 |
| MSM6352-RS40PINS | 4-BIT, MROM, MICROCONTROLLER |
| MSM6352-GS-K | 4-BIT, MROM, MICROCONTROLLER, PQFP44 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MSM6242BGS-KR1 | 制造商:ROHM Semiconductor 功能描述: |
| MSM6242BRS | 制造商:ROHM Semiconductor 功能描述: 制造商:OK International 功能描述: |
| MSM6242BRS-7 | 制造商:ROHM Semiconductor 功能描述:Directly connected to the bus real-time clock |
| MSM6250 | 制造商:QUALCOMM 制造商全稱:QUALCOMM 功能描述:CHIPSET SOLUTION |
| MSM6252 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:64words X Bit FIFO |
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