參數(shù)資料
型號: PSD713S5
英文描述: Field Programmable Microcontroller Peripherals with Supervisory Functions(可編程邏輯,4K位SRAM,27個可編程I/O,通用PLD有66個輸入)
中文描述: 現(xiàn)場可編程微控制器外圍設備具有監(jiān)督職能(可編程邏輯,4K的位的SRAM,27余個可編程輸入/輸出,通用PLD的有66個輸入)
文件頁數(shù): 14/104頁
文件大?。?/td> 515K
代理商: PSD713S5
PSD7XX Family
13-14
The PSD7XX
Functional
Blocks
The PSD7XX consists of five major functional blocks:
J
PLD Block
J
Bus Interface
J
I/O Ports
J
Memory Block
J
Power Management Unit
J
Supervisory Function
The functions of each block are described in the following sections. Many of the blocks
perform multiple functions, and are user configurable.
PLDs
The PLDs bring programmable logic functionality to the PSD7XX. After specifying the logic
for the PLDs by using the PSDabel tool in PSDsoft, the logic configuration is programmed
into the device and available when power is applied.
The PLDs (DPLD, ECSPLD, GPLD, and PPLD) consist of an AND array. The GPLD
architecture includes 12 Output Micro
Cells in addition to the AND array. There are
24 Input Micro
Cells that can be configured as inputs to the PLD. Figure 3 shows the orga-
nization of the PLD.
The AND array is used to form product terms specified using the PSDabel tool in the
PSDsoft development system. When the inputs used in a term are true, the output is active.
The GPLD Input Bus consists of 66 signals as shown in Table 7. Both the true and
complement value of inputs are available to the AND array. The DPLD and ECSPLD Input
Busses consists of fewer inputs and is a subset of the 66 inputs.
Input Source
Input Name
Number of Signals
MCU Address Bus
A[15:0]*
16
MCU Control Signals
CNTL[2:0]
3
Power Down
PDN
1
I/O Ports Inputs (Input Micro
Cells)
PA[7:0], PB[7:0],
PC[7:0]
24
Port D Inputs
PD[2:0]
3
Page Register
PGR[3:0]
4
Port A or B Micro
Cell Feedback
Port C Micro
Cell Feedback
MCELLAB.FB[7:4]
4
MCELLC.FB[7:0]
8
Supervisory Function
WatchDog Time Out
WDOG_ON
1
Supervisory Function
Global Reset or Expanded Reset
GRESET or ERESET
1
Supervisory Clock
2KHz Internal Oscillator or CLKIN/8192
Superv_CLK
1
Table 7. GPLD Inputs
*
NOTE:
The address inputs are A[19:4] in 80C51XA mode.
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