p89v660 NXP Semiconductors, p89v660 Datasheet - Page 76

• Manufacturer Part Number: p89v660
• Description: P89v660/p89v662/p89v664 8-bit 80c51 5 V Low Power 16 Kb/32 Kb/64 Kb Flash Microcontroller With 512 B/1 Kb/2 Kb Ram, Dual I2c-bus, Spi
• Manufacturer: NXP Semiconductors

NXP Semiconductors
P89V660_662_664_2
Product data sheet
Fig 37. External data memory read cycle
Fig 38. External data memory write cycle
PSEN
port 0
port 2
ALE
RD
PSEN
port 0
port 2
ALE
WR
t
AVLL
from RI to DPL
A0 to A7
t
A0 to A7 from RI or DPL
LHLL
t
AVLL
t
LLAX
t
AVWL
t
LLWL
P2[7:0] or A8 to A15 from DPH
t
AVWL
t
AVDV
P2.0 to P2.7 or A8 to A15 from DPH
t
RLAZ
t
LLDV
t
LLAX
t
LLWL
Rev. 02 — 29 January 2008
t
t
RLRH
RLDV
t
QVWH
DATA OUT
t
WLWH
DATA IN
80C51 with 512 B/1 kB/2 kB RAM, dual I
t
RHDX
t
RHDZ
t
WHLH
t
t
WHLH
WHQX
A0 to A7 from PCL
P89V660/662/664
A0 to A7 from PCL
A0 to A15 from PCH
A8 to A15 from PCH
INSTR IN
002aaa550
© NXP B.V. 2008. All rights reserved.
2
C-bus, SPI
INSTR IN
002aaa549
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