參數(shù)資料
型號： PSD501B1-C-90JI
廠商： 意法半導(dǎo)體
英文描述： Low Cost Field Programmable Microcontroller Peripherals
中文描述： 低成本現(xiàn)場可編程微控制器外圍設(shè)備
文件頁數(shù)： 32/153頁
文件大小： 1036K
代理商： PSD501B1-C-90JI
PSD5XX Famly
29
9.2
Bus
Interface
The Bus Interface is very flexible and can be configured to interface to most
microcontrollers with no glue logic. Table 4 lists some of the bus types to which the Bus
Interface is able to interface.
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 PSD5XX is able to
interface to most microcontrollers, including the ones listed in Table 4. In Table 5, 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 PSD5XX and some typical
microcontrollers are shown in following sections.
Pin Name
Pin
Pin
Pin
Pin
Pin
Function
1
Function
2
Function
3
Function
4
Function
5
RD
RD
E
DS
LDS
WR
WR
R/W
WRL
PE0
BHE
PSEN
WRH
UDS
SIZ0
PE1
ALE
AD0
A0
BLE
Table 5. Alternate Pin Functions
9.2.2 PSD5XX Interface To a Multiplexed Bus
Figure 14 shows a typical connection to a microcontroller with a multiplexed bus. The ADIO
port of the PSD5XX is connected directly to the microcontroller address/data bus
(AD0-AD15 for 16 bit bus). The ALE input signal latches the address lines internally. In a
read bus cycle, data is driven out through the ADIO Port transceivers after the specified
access time. The internal ADIO Port connection for a 16 bit multiplexed bus is shown in
Figure 15. The ADIO port is in tri-state mode if none of the PSD5XX internal devices are
selected.
Multiplexed
Data Bus
Width
Bus Control
Signals
Microcontroller
Mux
8
WR, RD, PSEN, A0
8031/80C51
Mux/Non-mux
8/16
R/W, E, BHE, A0
68HC11
Mux
8/16
WR, RD, BHE, A0
80C196/80C186
Mux
16
WRL, RD, WRH, A0
80C196SP
Non-mux
16
R/W, LDS, UDS
68302
Non-mux
8/16
R/W, DS, SIZ0, A0
68340
Non-mux
16
R/W, DS, BHE, BLE
68330, 68331
Non-mux
8
RD, WR
68HC05C
Non-mux
16
R/W, E, LSTRB, A0
68HC12
Non-mux
16
R/W, DS
68HC16
Table 4. Typical Microcontroller Bus Types
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSD501B1C-90JI 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 256K 90ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
PSD501B1-C-90UI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
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PSD502B1-12J 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral
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