CHAPTER 5 MEMORY ACCESS CONTROL FUNCTION
User’s Manual U12688EJ4V0UM00
136
5.3
DRAM Controller
5.3.1 Features
{
Generates the RAS, LCAS and UCAS signals.
{
Can be connected directly to high-speed page DRAM and EDO DRAM.
{
Supports the RAS hold mode.
{
4 types of DRAM can be assigned to 8 memory block spaces.
{
Can handle 2CAS type DRAM
{
Can be switched between row and column address multiplex widths.
{
Waits (0 to 3 waits) can be inserted at the following timings.
•
Row address precharge wait
•
Row address hold wait
•
Data access wait
•
Column address precharge wait
{
Supports CBR refresh and CBR self-refresh.
Содержание V850E/MS1 UPD703100
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