ZPSD403A2-C-70L View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ZPSD403A2-C-70L Datasheet PDF : 123 Pages
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The PSD4XX
Architecture
(cont.)
PSD4XX Family
9.2 Bus Interface
The Bus Interface is very flexible and can be configured to interface to most
microcontrollers with no glue logic. Table 5 lists some of the bus types to which the Bus
Interface is able to interface.
Table 5. Typical Microcontroller Bus Types
Multiplexed
Data Bus
Width
Bus Control
Signals
Mux
Mux /
Non-mux
Mux
Mux
Non-mux
Non-mux
Non-mux
Non-mux
Non-mux
Non-mux
8
WR, RD, PSEN, A0
8/16
R/W, E, BHE, A0
8/16
WR, RD, BHE, A0
16
WRL, RD, WRH, A0
16
R/W, LDS, UDS
8/16
R/W, DS, SIZ0, A0
16
R/W, DS, BHE, BLE
8
RD, WR
16
R/W, E, LSTRB, A0
16
R/W, DS
Microcontroller
8031/80C51
68HC11
80C196/80C186
80C196SP
68302
68340
68330, 68331
68HC05C
68HC12
68HC16
9.2.1 Bus Interface Configuration
The Bus Interface Logic is user configurable. The type of bus interface is specified by
the user in the PSDsoft software (PSD configuration). The bus control input pins have
multi-function capabilities. By choosing the right configuration, the PSD4XX is able to
interface to most microcontrollers, including the ones listed in Table 5. In Table 6, the
names of the bus control input signal pins and their multiple functions are shown. For
example, Pin PE0 can be configured by the PSD configuration software to perform any one
of the five functions. Examples on the interface between the PSD4XX and some typical
microcontrollers are shown in following sections.
37
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