Motorola MVME162 Manuale Utente
Board Level Hardware Description
1-14
MVME162 Embedded Controller Installation Guide
1
!
WARNING
Lithium batteries incorporate inflammable materials such
as lithium and organic solvents. If lithium batteries are
mistreated or handled incorrectly, they may burst open and
ignite, possible resulting in injury and/or fire. When
dealing with lithium batteries, carefully follow the
precautions listed below in order to prevent accidents.
as lithium and organic solvents. If lithium batteries are
mistreated or handled incorrectly, they may burst open and
ignite, possible resulting in injury and/or fire. When
dealing with lithium batteries, carefully follow the
precautions listed below in order to prevent accidents.
❏
Do not short circuit.
❏
Do not disassemble, deform, or apply excessive pressure.
❏
Do not heat or incinerate.
❏
Do not apply solder directly.
❏
Do not use different models, or new and old batteries together.
❏
Do not charge.
❏
Always check proper polarity.
To remove the battery from the module, carefully pull the battery from the
socket.
socket.
Before installing a new battery, ensure that the battery pins are clean. Note the
battery polarity and press the battery into the socket. When the battery is in the
socket, no soldering is required.
battery polarity and press the battery into the socket. When the battery is in the
socket, no soldering is required.
EPROM and Flash
The MVME162 implementation includes 1 MB of Flash memory (an 8-Mbit
Flash device organized as a 1M X 8, or four 2-Mbit Flash devices organized as
256Kbit x 8). For information on programming Flash, refer to the Intel
documents listed in Related Documentation in this chapter. The EPROM
location is a standard JEDEC 32-pin PLCC capable of 4 Mbit densities
organized as a 512 KB X 8 device. Depending on a jumper setting (GPIO3, pins
9-10 on J22), the MC68xx040 reset code can be fetched from either the Flash
(GPIO3 installed) or EPROM (GPIO3 removed).
Flash device organized as a 1M X 8, or four 2-Mbit Flash devices organized as
256Kbit x 8). For information on programming Flash, refer to the Intel
documents listed in Related Documentation in this chapter. The EPROM
location is a standard JEDEC 32-pin PLCC capable of 4 Mbit densities
organized as a 512 KB X 8 device. Depending on a jumper setting (GPIO3, pins
9-10 on J22), the MC68xx040 reset code can be fetched from either the Flash
(GPIO3 installed) or EPROM (GPIO3 removed).
Battery Backed Up RAM and Clock
The MK48T08 RAM and clock chip is used on the MVME162. This chip pro-
vides a time of day clock, oscillator, crystal, power failure detection, memory
write protection, 8KB of RAM, and a battery in one 28-pin package. The clock
provides seconds, minutes, hours, day, date, month, and year in BCD 24-hour
format. Corrections for 28- day, 29-day (leap year), and 30-day months are
automatically made. No interrupts are generated by the clock. The MK48T08
vides a time of day clock, oscillator, crystal, power failure detection, memory
write protection, 8KB of RAM, and a battery in one 28-pin package. The clock
provides seconds, minutes, hours, day, date, month, and year in BCD 24-hour
format. Corrections for 28- day, 29-day (leap year), and 30-day months are
automatically made. No interrupts are generated by the clock. The MK48T08