Functional Description
2-17
2
Battery Backed Up RAM and Clock
The MK48T08 RAM and clock chip is a 28-pin package that
provides:
❏
A time-of-day clock
❏
An oscillator
❏
A crystal
❏
Power fail detection
❏
Memory write protection
❏
8KB of RAM
❏
A battery
The clock provides
❏
Seconds, minutes, hours, day, date, month, and year in BCD
24-hour format
❏
Automatic corrections for 28-, 29- (leap year), and 30-day
months
No interrupts are generated by the clock.
The MK48T08 is an 8 bit device; however, the interface provided by
the PCCchip2 supports 8-, 16-, and 32-bit accesses to the MK48T08.
Refer to the MK48T08 data sheet for detailed programming
information.
Summary of Contents for MVME167 Series
Page 1: ...MVME167 Single Board Computer Installation Guide MVME167IG D4 ...
Page 6: ......
Page 106: ...4 28 Debugger General Information 4 ...
Page 132: ...5 26 Using the 167Bug Debugger 5 ...
Page 146: ...A 14 Configure and Environment Commands A ...
Page 152: ...B 6 Disk Tape Controller Data B ...
Page 160: ...D 6 Troubleshooting the MVME167 Solving Startup Problems D ...
Page 168: ...E 8 EIA 232 D Interconnections E ...