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參數(shù)資料
| 型號： | PSD4135G3-B-15JI |
| 廠商： | 意法半導體 |
| 英文描述： | Ceramic Commercial-Off-The-Shelf Surface Mount Capacitors (COTS); Capacitance [nom]: 4700pF; Working Voltage (Vdc)[max]: 100V; Capacitance Tolerance: +/-10%; Dielectric: Multilayer Ceramic; Temperature Coefficient: X7R; Lead Style: Surface Mount Chip; Lead Dimensions: 0805; Termination: Solder (SnPb) Plated Nickel Barrier; Body Dimensions: 0.079" x 0.049"; Container: Bulk; Features: MIL-PRF-55681; Unmarked |
| 中文描述： | Flash在系統(tǒng)可編程外設的16位微控制器 |
| 文件頁數(shù)： | 53/93頁 |
| 文件大?。?/td> | 503K |
| 代理商： | PSD4135G3-B-15JI |
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PSD4000 Series
Preliminary Information
50
9.4.3 Port Configuration Registers (PCRs)
Each port has a set of PCRs used for configuration. The contents of the registers can be
accessed by the microcontroller through normal read/write bus cycles at the addresses
given in Table 6. The addresses in Table 6 are the offsets in hex from the base of the
CSIOP register.
The pins of a port are individually configurable and each bit in the register controls its
respective pin. For example, Bit 0 in a register refers to Bit 0 of its port. The three PCRs,
shown in Table 19, are used for setting the port configurations. The default power-up state
for each register in Table 22 is 00h.
Register Name
Port
MCU Access
Control
Direction
Drive Select*
E,F,G
A,B,C,D,E,F,G
A,B,C,D,E,F,G
Write/Read
Write/Read
Write/Read
Table 19. Port Configuration Registers
*
NOTE:
See Table 22 for Drive Register bit definition.
The
PSD4000
Functional
Blocks
(cont.)
9.4.3.1 Control Register
Any bit set to
‘
0
’
in the Control Register sets the corresponding Port pin to MCU I/O Mode,
and a
‘
1
’
sets it to Address Out Mode. The default mode is MCU I/O. Only Ports E, F and
G have an associated Control Register.
9.4.3.2 Direction Register
The Direction Register controls the direction of data flow in the I/O Ports. Any bit set to
‘
1
’
in the Direction Register will cause the corresponding pin to be an output, and any bit set
to
‘
0
’
will cause it to be an input. The default mode for all port pins is input.
Figures 21 and 23 show the Port Architecture diagrams for Ports A/B/C and E/F/G
respectively. The direction of data flow for Ports A, B, C and F are controlled by the
direction register.
An example of a configuration for a port with the three least significant bits set to output
and the remainder set to input is shown in Table 21. Since Port D only contains four pins,
the Direction Register for Port D has only the four least significant bits active.
Direction Register Bit
0
1
Port Pin Mode
Input
Output
Table 20. Port Pin Direction Control
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
1
1
1
Table 21. Port Direction Assignment Example
相關PDF資料 |
PDF描述 |
|---|---|
| PSD4135G3-B-15M | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-15MI | Ceramic Commercial-Off-The-Shelf Surface Mount Capacitors (COTS); Capacitance [nom]: 4700pF; Working Voltage (Vdc)[max]: 50V; Capacitance Tolerance: +/-10%; Dielectric: Multilayer Ceramic; Temperature Coefficient: X7R; Lead Style: Surface Mount Chip; Lead Dimensions: 0805; Termination: Solder (SnPb) Plated Nickel Barrier; Body Dimensions: 0.079" x 0.049"; Container: Bulk; Features: MIL-PRF-55681; Unmarked |
| PSD4135G3-B-15U | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-15UI | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-20B81 | Flash In-System-Programmable Peripherals for 16-Bit MCUs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PSD4135G3-B-15M | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-15MI | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-15U | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-15UI | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs |
| PSD4135G3-B-20B81 | 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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