p89cv51rb2 NXP Semiconductors, p89cv51rb2 Datasheet - Page 61

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p89cv51rb2

Manufacturer Part Number
p89cv51rb2
Description
P89cv51rb2/rc2/rd2 8-bit 80c51 5 V Low Power 64 Kb Flash Microcontroller With 1 Kb Ram, Spi, 6-clock Cpu With 6/12-clock Peripherals
Manufacturer
NXP Semiconductors
Datasheet

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NXP Semiconductors
P89CV51RB2_RC2_RD2_1
Product data sheet
Fig 30. External data memory read cycle
Fig 31. 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. 01 — 5 October 2007
t
t
RLRH
RLDV
t
QVWH
DATA OUT
t
WLWH
DATA IN
t
RHDX
P89CV51RB2/RC2/RD2
t
RHDZ
t
WHLH
t
t
WHLH
WHQX
A0 to A7 from PCL
A0 to A7 from PCL
A0 to A15 from PCH
A8 to A15 from PCH
80C51 with 1 kB RAM, SPI
INSTR IN
002aaa550
© NXP B.V. 2007. All rights reserved.
INSTR IN
002aaa549
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