DS89C430 Maxim, DS89C430 Datasheet - Page 34
DS89C430
Manufacturer Part Number
DS89C430
Description
The DS89C430 and DS89C450 offer the highest performance available in 8051-compatible microcontrollers
Manufacturer
Maxim
Datasheet
1.DS89C430.pdf
(46 pages)
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Figure 12. Page Mode 1, External Data Memory Access
(PAGES = 01, STRETCH = 1, CD = 10)
RD / WR
RD / WR
XTAL1
Port 0
Port 2
RD / WR
PSEN
PSEN
Port 0
Port 2
Port 0
Port 2
ALE
PSEN
ALE
ALE
LSB Addr
LSB Addr
LSB Addr
Inst
Inst
Inst
MOVX Inst
Fetch
MOVX Inst
Fetch
LSB Addr
LSB Addr
LSB Addr
MOVX
MOVX
Inst
MSB Addr
MSB Addr
LSB Addr
Inst
LSB Addr
LSB Addr
MSB Addr
Memory Access (Stretch =1)
MOVX
Inst
DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers
MOVX Instruction
MOVX Instruction
34 of 46
Memory Access (Stretch =1)
LSB Addr
Inst
Memory Access (Stretch =1)
LSB Addr
LSB Addr
MOVX Instruction
Data
Data
LSB Addr
Data
LSB Addr
LSB Addr
Inst
Inst
LSB Addr
LSB Addr
LSB Addr
Inst
Inst
Inst
LSB Addr
LSB Addr
LSB Addr
Inst
Inst
Inst
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