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Bus Controller (BC)
8-64
■
2 WE control/2 CAS control
DRAM that permits byte/word control can be supported by selecting either one of the following two methods:
• 2 WE control: The two pins WE1 and WE0 are used for byte/word control.
• 2 CAS control: The two pins DCAS1 and DCAS0 are used for byte/word control.
Fig. 8-14-3 illustrates an example of a write using 2 WE control, and Fig. 8-14-4 illustrates an example of a write
using 2 CAS control.
Fig. 8-14-3
Example of an 8-bit Data Write Using 2 WE Control (16-bit Bus Width)
Fig. 8-14-4
Example of an 8-bit Data Write Using 2 CAS Control (16-bit Bus Width)
MCLK
An
Dn
CAS
RASn
WE1
WE0
Row
Column
Column
Row
MCLK
An
Dn
DCAS1
RASn
DWE
DCAS0
Row
Column
Row
Column
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...