MT8889CC View Datasheet(PDF) - Mitel Networks
Part Name
Description
MFG CO.
'MT8889CC' PDF : 18 Pages View PDF
MT8889C/MT8889C-1
DS
Q clk*
tRWS
tRWH
A0-A15
(RS0)
R/W(read)
Read Data
(D3-D0)
16 bytes of Addr
tDDR
tDHR
R/W (write)
tDSW
Write data
(D3-D0)
CS = (E + Q).Addr [MC6809]
CS = VMA.Addr [MC6800, MC6802]
*microprocessor pin
tAS
tAS
tCSS
tCSS
tCSH
tAH
tAH
tCSH
Figure 17 - MC6800/MC6802/MC6809 Timing Diagram
tDSW is from data to DS falling edge; tCSH is from DS rising edge to CS rising edge
tRWS
tDHW
DS
R/W
Read
AD3-AD0
(RS0, D0-D3)
Write
AD3-AD0
(RS0-D0-D3)
Addr *
non-mux
tAS
Addr
tDDR
Addr
tAH
High Byte of Addr
tCSH
tDSW
tRWH
tDHR
Data
Data
tDHW
AS *
CS = AS.Addr
* microprocessor pins
tCSS
Figure 18 - MC68HC11 Bus Timing (with multiplexed address and data buses)
4-123
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