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參數(shù)資料
| 型號(hào)： | PSD4235G2V-A-90B81I |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| 中文描述： | Flash在系統(tǒng)可編程外設(shè)的16位微控制器 |
| 文件頁(yè)數(shù)： | 52/93頁(yè) |
| 文件大?。?/td> | 503K |
| 代理商： | PSD4235G2V-A-90B81I |
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Preliminary 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:
t MCU I/O Mode
t PLD Input – direct input to PLD
Port D pins can be configured in PSDsoft as input pins for other dedicated functions:
t PD0 – ALE, as address strobe input
t PD1 – CLKIN, as clock input to the PLD and APD counter
t PD2 – CSI, as active low chip select input. A high input will disable the
Flash/SRAM and CSIOP.
t 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):
t MCU I/O Mode
t 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.
t Open Drain – Port E pins can be configured in Open Drain Mode
t 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.
t Latched Address Output – Provided latched address (A7-0) output
INTERNAL
DATA
BUS
DATA OUT
REG.
DQ
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PSD4235G2V-A-90J | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4235G2V-A-90JI | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4235G2V-A-90M | CAP 150UF 10V 20% TANT SMD-7343-31 TR-7-PL SN100% LOWESR-0250 |
| PSD4235G2V-B-15B81 | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4235G2V-B-15B81I | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
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