MT88L85 Datasheet, PDF (18/20 Pages) Mitel Networks Corporation – 3V Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface

MT88L85
Advance Information
DS
Q clk*
t_RWS
t_RWH
A0-A15
(RS0)
R/W(read)
Read Data
(D3-D0)
16 bytes of Addr
t_DDR
t_DHR
R/W (write)
t_DSW^Œ
Write data
(D3-D0)
CS = (E + Q).Addr [MC6809]
CS = VMA.Addr [MC6800, MC6802]
*microprocessor pin
t_AS
t_AS
t_CSS
t_CSS
t_CSH^Œ
t_AH
t_AH
t_CSH^Œ
Figure 16 - MC6800/MC6802/MC6809 Timing Diagram
Πt_DSW is from data to DS falling edge; t_CSH is from DS rising edge to CS rising edge
t_RWS
t_DHW
DS
R/W
Read
AD3-AD0
(RS0, D0-D3)
Write
AD3-AD0
(RS0-D0-D3)
Addr *
non-mux
t_AS
Addr
t_DDR
Addr
t_AH
High Byte of Addr
t_CSH
t_DSW
t_RWH
t_DHR
Data
Data
t_DHW
AS *
CS = AS.Addr
* microprocessor pins
t_CSS
Figure 17 - MC68HC11 Bus Timing (with multiplexed address and data buses)
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