參數(shù)資料
型號: PSD612E1
英文描述: Field Programmable Microcontroller Peripherals with Embedded Micro--Cell(可編程邏輯,4K位SRAM,26個可編程I/O,通用PLD有63個輸入)
中文描述: 現(xiàn)場可編程微控制器外圍設(shè)備和嵌入式微-細(xì)胞(可編程邏輯,4K的位的SRAM,26我個可編程輸入/輸出,通用PLD的有63個輸入)
文件頁數(shù): 40/84頁
文件大?。?/td> 426K
代理商: PSD612E1
PSD6XX Family
11-40
Port Operating Modes
The I/O Ports have several modes of operation as shown in Table 21. The mode may be
selected using the PSDabel tool and programmed into the device using Non-Volatile
Memory (NVM) that is active when power is applied and cannot be altered unless the
device is reprogrammed. If a mode is not defined in PSDsoft, then other modes can be
set by the microcontroller writing to the Port configuration registers. The PLD I/O, Data Port
and Address Input modes are NVM configurations. The other modes are initiated by the
microcontroller.
If the NVM modes are not selected, the port can be altered dynamically between MCU I/O
or Address Out modes by writing to the Control Register. Each bit of the eight-bit Control
Register may store a “1”, setting its respective bit in the port to MCU I/O, or to a “0”, setting
it to Address Out. The Direction Register or the output enable product term determine if the
pin is input or output.
Table 21 summarizes the operating modes of the I/O ports. Not all the functions are
available to every port. Table 22 shows how and where the different modes are configured.
Port Mode
Port A
Port B
Port C
Port D
MCU I/O
Yes
Yes
Yes
Yes
PLD I/O
McellAB Outputs
McellC Outputs
ECSPLD Outputs
ZPLD Inputs
PA7–4
No
PA3–0
Yes
PB7–4
No
PB3–0
Yes
No
PC7–3, 1–0
No
Yes
No
No
PD2–0
Yes
Address Out
Yes (A7–0)
Yes (A7–0,
A15–8)
No
No
Address In
Yes
Yes
Yes
No
Data Port
Yes (D7–0)
Yes (D15–8)
No
No
Open Drain
Yes (PA7–4)
Yes (PB7–4)
Yes
No
Slew Rate
Yes (PA3–0)
Yes (PB3–0)
No
Yes
Peripheral I/O
Yes
No
No
No
Table 21. Port Operating Modes
I/O Ports
(cont.)
相關(guān)PDF資料
PDF描述
PSD613E1 Field Programmable Microcontroller Peripherals with Embedded Micro--Cell(可編程邏輯,4K位SRAM,26個可編程I/O,通用PLD有63個輸入)
PSD703S5 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)
PSD701S5 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)
PSD702S5 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)
PSD711S5 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)
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