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Bus Controller (BC)
8-62
8.14 External Memory Space Access (DRAM Space)
8.14.1
DRAM Space
Blocks 1 and 2 can be used as DRAM space by setting the BnDRAM bits in memory control registers 1B/2B and
setting the DRAME bit in DRAM control register. The DRAM bus cycle is always not synchronized the external
clock (but is synchronized with MCLK), and performs address multiplexed output, RAS/CAS signal output, etc.
Note: When common pins are used for addresses and data, DRAM cannot be supported.
The RAS/CAS signal output timing can be set through software in the DRAM control register and memory control
registers 1A/B and 2A/B.
Fig. 8-14-1 shows the DRAM access timing chart.
Note: For details on the timing settings, refer to section 8.6, “Description of Registers.”
MCLK
ASR
CAO
An
RASn
CAS
RE
Dn
CAS
ASC
Column
RSH
WEn
ASC
Column
CAO
ASR
CAS
WEN
Row
Row
RSH
Read
Write
Fig. 8-14-1
DRAM Access Timing Chart
For details on the various timing settings, refer to the description of the memory control register in section 8.6,
“Description of Registers.”
Содержание MN103001G/F01K
Страница 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
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Страница 7: ...14 A D Converter 15 I O Ports 16 Internal Flash Memory 17 Ordering Mask ROM Appendix 14 15 16 17 ...
Страница 8: ......
Страница 9: ...Table of Contents List of Figures and Tables 0 ...
Страница 26: ...xviii ...
Страница 27: ...1 0 1 General Specifications ...
Страница 35: ...2 CPU 2 ...
Страница 57: ...3 Extension Instruction Specifications 3 ...
Страница 96: ...Extension Instruction Specifications 3 40 ...
Страница 97: ...4 Memory Modes 3 4 ...
Страница 102: ...Memory Modes 4 6 ...
Страница 103: ...5 Operating Mode 5 ...
Страница 107: ...6 Clock Generator 6 13 ...
Страница 111: ...7 Internal Memory 7 ...
Страница 114: ...Internal Memory 7 4 ...
Страница 115: ...8 Bus Controller BC 8 ...
Страница 189: ...9 Interrupt Controller 9 ...
Страница 220: ...Interrupt Controller 9 32 ...
Страница 221: ...10 8 bit Timers 9 10 ...
Страница 254: ...8 bit Timers 10 34 ...
Страница 255: ...11 16 bit Timers 11 ...
Страница 292: ...16 bit Timers 11 38 ...
Страница 293: ...12 Watchdog Timer 11 12 ...
Страница 302: ...Watchdog Timer 12 10 ...
Страница 303: ...13 Serial Interface 13 ...
Страница 354: ...Serial Interface 13 52 ...
Страница 355: ...14 A D Converter 14 ...
Страница 367: ...15 I O Ports 15 ...
Страница 431: ...16 Internal Flash Memory 16 ...
Страница 439: ...17 17 Ordering Mask ROM ...
Страница 442: ...Ordering Mask ROM 17 4 ...
Страница 443: ...Appendix ...