Users Guide: Network Microcontroller Supplement User Manual

High-Speed Microcontroller User’s
Guide: Network Microcontroller
Supplement
103
Figure 6-4. Multiplexed Address/Data Bus
DS80C400
P7.3/A3
P7.4/A4
P7.5/A5
P7.6/A6
P7.7/A7
Vcc1
EA\
ALE
PSEN\
P2.0\A8
P2.1\A9
P2.2\A10
Vss
Vcc3
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
P6.0/CE4
P6.1/CE5
P6.2/CE6
P6.3/CE7
P6.4/A20
P6.5/A21
CRS
COL
TXD.3
TXD.2
TXD.1
TXD.0
TX_EN
TXCLK
RX_ER
RXCLK
RX_DV
Vcc3
Vss
RXD.0
RXD.1
RXD.2
RXD.3
MDC
MDIO
P3.0/RXD0
P3.1/TXD0
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1/CLKO
OWSTP\ OW RSTOL RST P1.7/INT5 P1.6/INT4 P1.5/INT3 P1.4/INT2 P1.3/TXD1 P1.2/RXD1 P1.1/T2EX P1.0/T2 Vss Vcc3 P0.0/D0 P0.1/D1 P0.2/D2 P0.3/D3 P0.4/D4 P0.5/D5 P0.6/D6 P0.7/D7 P7.0/A0 P7.1/A1 P7.2/A2
P3.6/WR
P3.7/RD
P5.7/PCE3 P5.6/PCE2 P5.5/PCE1 P5.4/PCE0
P5.3
P5.2/T3
P5.1/C0RX
P5.0/C0TX
Vcc3
XTAL2 XTAL1
Vss
MUX\
P4.7/A19 P4.6/A18 P4.5/A17 P4.4/A16
P4.3/CE3 P4.2/CE2 P4.1/CE1 P4.0/CE0
P6.7/TXD2
P6.6/RXD2
D0–D7
256kB x 8
Flash program
memory
(configurable
as data
memory)
A0–A7
A8–A15
A16
A17
OE\
CE\
WE\
74373
LE\
D0–D7
256kB x 8
Flash program
memory
(configurable
as data
memory)
A0–A7
A8–A15
A16
A17
OE\
CE\
WE\
D0–D7
256kB x 8
Dedicated
data memory
or peripheral
memory
A0–A7
A8–A15
A16
A17
OE\
CE\
WE\
Maxim Integrated