sed1374 ETC-unknow, sed1374 Datasheet - Page 344
sed1374
Manufacturer Part Number
sed1374
Description
Sed1374 Embedded Memory Color Lcd Controller
Manufacturer
ETC-unknow
Datasheet
1.SED1374.pdf
(420 pages)
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Page 12
2.3.2 User-Programmable Machine (UPM)
SED1374
X26A-G-010-02
The UPM is typically used to control memory types, such as Dynamic RAMs, which have
complex control or address multiplexing requirements. The UPM is a general purpose
RAM-based pattern generator which can control address multiplexing, wait state gener-
ation, and five general-purpose output lines on the MPC821. Up to 64 pattern locations are
available, each 32 bits wide. Separate patterns may be programmed for normal accesses,
burst accesses, refresh (timer) events, and exception conditions. This flexibility allows
almost any type of memory or peripheral device to be accommodated by the MPC821.
In this application note, the GPCM is used instead of the UPM, since the GPCM has enough
flexibility to accommodate the SED1354 and it is desirable to leave the UPM free to handle
other interfacing duties, such as EDO DRAM.
Interfacing to the Motorola MPC821 Microprocessor
Epson Research and Development
Vancouver Design Center
Issue Date: 99/01/05
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