MSM6242B |
RFQ for MSM6242B Required Field |
 |
| Product | Manufacturers | Pack | D/C |
| MSM6242B | - | SOP | - |
The MSM6242B is a silicon gate CMOS Real Time Clock/Calendar for use in direct busconnection Microprocessor/Microcomputer applications. An on-chip 32.768 KHz crystal oscillator time base is divided to provide addressable 4-bit I/O data for SECONDS,MINUTES, HOURS, DAY OF WEEK, DATE,MONTH and YEAR. Data access is controlled by 4-bit address, chip selects (CSO, 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 Control Register inputs T0, T1 and the ITRPT/ STND (INTERRUPT/STANDARD). Masking of the interrupt output (STD.P) can be accomplished via the MASK bit. The MSM6242B can operate in a 12/24 hour format and Leap Year timing is automatic.
The MSM6242B normally operates from a 5V ±10% supply at 40 to 85°C. Battery backup operation down to 2.0V 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 |
| • 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 5V supply• Battery backup down to VDD = 2.0V• Low power dissipation: 20W max at VDD = 2V 150W max at VDD = 5V• 18 pin Plastic DIP (DIP18-P-300)• 24 Pin-V Plastic SOP (SOP24-P-430-VK) |
|
Rating |
Symbol |
Condition |
Value |
Unit |
| Power Supply Voltage |
VDD |
Ta = 25°C
|
-0. 3 to 7 |
V |
| Input Voltage |
VI |
0.3 to VDD+0.3 |
V | |
| Output Voltage |
VO |
0.3 to VDD+0.3 |
V | |
| Storage temperature |
TSTG |
- |
55 to +150 |
°C |
