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| 型號： | PSD4135G2 |
| 英文描述： | Flash In-System-Programmable Peripherals for 16-Bit MCUs(用于16位MCU的閃速在系統(tǒng)可編程外圍芯片) |
| 中文描述： | Flash在系統(tǒng)可編程外設的16位微控制器（用于16位微控制器的閃速在系統(tǒng)可編程外圍芯片） |
| 文件頁數(shù)： | 57/96頁 |
| 文件大小： | 515K |
| 代理商： | PSD4135G2 |
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Beta Information
PSD4000 Series
53
The
PSD4000
Functional
Blocks
(cont.)
9.4.6 Port D – Functionality and Structure
Port D has four I/O pins. See Figure 22. Port D can be configured to program one or more
of the following functions:
MCU I/O Mode
PLD Input
–
direct input to PLD
Port D pins can be configured in PSDsoft as input pins for other dedicated functions:
PD0
–
ALE, as address strobe input
PD1
–
CLKIN, as clock input to the PLD and APD counter
PD2
–
CSI, as active low chip select input. A high input will disable the
Flash/SRAM and CSIOP.
PD3
–
WRH, as active low Write Enable (high byte) input or as DBE input from
68HC912
9.4.7 Port E – Functionality and Structure
Port E can be configured to perform one or more of the following functions (see Figure 23):
MCU I/O Mode
In-System Programming
–
JTAG port can be enabled for programming/erase of the
PSD4000 device. (See Section 9.6 for more information on JTAG programming.)
Pins that are configured as JTAG pins in PSDsoft will not be available for other I/O
functions.
Open Drain
–
Port E pins can be configured in Open Drain Mode
Battery Backup features
–
PE6 can be configured as a Battery Input (Vstby) pin.
PE7 can be configured as a Battery On Indicator output
pin, indicating when Vcc is less than Vbat.
Latched Address Output
–
Provided latched address (A7-0) output
I
DATA OUT
REG.
D
Q
D
Q
WR
WR
READ MUX
P
D
B
PLD INPUT
DIR REG.
DATA IN
OUTPUT
SELECT
OUTPUT
MUX
PORT D PIN
DATA OUT
Figure 22. Port D Structure
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PSD4135G2-12B81 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G2-12B81I | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G2-12J | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G2-12JI | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G2-12M | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
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