MC68360ZP25L Freescale Semiconductor, MC68360ZP25L Datasheet - Page 804
MC68360ZP25L
Manufacturer Part Number
MC68360ZP25L
Description
IC MPU QUICC 25MHZ 357-PBGA
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68EN360VR25L.pdf
(14 pages)
2.MC68EN360VR25L.pdf
(2 pages)
3.MC68360AI25L.pdf
(962 pages)
Specifications of MC68360ZP25L
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
357-PBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
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Applications
9.8.2.4 EEPROM. Figure 9-31 shows the interface to an EEPROM device to give a small
amount of nonvolatile storage. In this case a byte-wide EEPROM bank is defined to mini-
mize cost. If the port size of the chip select is selected to be 8-bits, then each byte of the
EEPROM may be accessed in succession. The CS4 pin should be programmed to respond
to an 8K byte area in this design.
Only one byte should be written at a time. After a write is made, software is responsible for
waiting the appropriate time (e.g. 10 ms) or for doing data polling to see if the newly written
data byte is correct.
9.8.2.5 DRAM SIMM. Figure 9-32 shows the interface to an MCM32100S DRAM single in-
line memory module (SIMM). Both the MC68EC030 and the QUICC can access the DRAM.
When the QUICC is a slave to an external MC68EC030, the address multiplexing for the
DRAM must be done externally to the QUICC, which is accomplished in the three F157 mul-
tiplexers. The external address multiplexing scheme is very simple and allows page mode
operation to be provided for the MC68EC030, if desired. This multiplexing scheme exter-
nally provides, the same multiplexing method that the QUICC implements internally.
9-84
This multiplexing scheme allows the use of page mode, but re-
quires hardware modification if larger SIMMs are to be used on
the board. If the user is interested in the latter, rather than the
Figure 9-31. 8-Kbyte EEPROM Bank—8 Bits Wide
WE3
A12–A0
SYSTEM BUS AND
QUICC-GENERATED SIGNALS
R/W
D31–D24
CS4
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
NOTE
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CE (Enable)
OE
WE (Write)
EEPROM
PORT SIZE
8K 8
2864
BYTE
A10
A11
A12
A0
A2
A3
A4
A5
A6
A7
A8
A9
A1
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