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| 型號： | PSD813F3V |
| 英文描述： | 60V 100kRad Hi-Rel Single P-Channel TID Hardened MOSFET in a UB Surface Mount package; Similar to IRHLUB7970Z4 with optional Total Dose Rating of 300kRads |
| 中文描述： | Flash在系統(tǒng)編程（ISP）外設(shè)的8位微控制器 |
| 文件頁數(shù)： | 48/103頁 |
| 文件大小： | 1185K |
| 代理商： | PSD813F3V |
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PSD81XFX, PSD83XF2, PSD85XF2
48/103
I/O PORTS
There are four programmable I/O ports: Ports A, B,
C, and D. Each of the ports is eight bits except Port
D, which is 3 bits. Each port pin is individually user
configurable, thus allowing multiple functions per
port. The ports are configured using PSDsoft Ex-
press Configuration or by the MCU writing to on-
chip registers in the CSIOP space.
The topics discussed in this section are:
I
General Port architecture
I
Port operating modes
I
Port Configuration Registers (PCR)
I
Port Data Registers
I
Individual Port functionality.
General Port Architecture
The general architecture of the I/O Port block is
shown in Figure 23. Individual Port architectures
are shown in Figure 25 to Figure 28. In general,
once the purpose for a port pin has been defined,
that pin is no longer available for other purposes.
Exceptions are noted.
As shown in Figure 23, the ports contain an output
multiplexer whose select signals are driven by the
configuration bits in the Control Registers (Ports A
and B only) and PSDsoft Express Configuration.
Inputs to the multiplexer include the following:
I
Output data from the Data Out register
I
Latched address outputs
I
CPLD macrocell output
I
External Chip Select (ECS0-ECS2) from the
CPLD.
The Port Data Buffer (PDB) is a tri-state buffer that
allows only one source at a time to be read. The
Port Data Buffer (PDB) is connected to the Internal
Data Bus for feedback and can be read by the
MCU. The Data Out and macrocell outputs, Direc-
tion and Control Registers, and port pin input are
all connected to the Port Data Buffer (PDB).
Figure 23. General I/O Port Architecture
I
DATA OUT
REG.
D
Q
D
G
Q
D
Q
D
Q
WR
WR
WR
ADDRESS
MACROCELL OUTPUTS
ENABLE PRODUCT TERM (.OE)
EXT CS
ALE
READ MUX
P
D
B
CPLD-INPUT
CONTROL REG.
DIR REG.
INPUT
MACROCELL
ENABLE OUT
DATA IN
OUTPUT
SELECT
OUTPUT
MUX
PORT PIN
DATA OUT
ADDRESS
AI02885
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| PSD813F5V | -60V 100kRad Hi-Rel Single P-Channel TID Hardened MOSFET in a SMD-2 package; Similar to IRHNA9064 with optional Total Dose Rating of 300kRads |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSD813F3V-12 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V |
| PSD813F3V-12J | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
| PSD813F3V-12JI | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
| PSD813F3V-12JIT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
| PSD813F3V-12JT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs |
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