参数资料
型号: PSD813FH
英文描述: Field Programmble Microcontroller Peripherals With Flash Memory(带闪存的现场可编程微控制器)
中文描述: 场可编程微控制器外围设备与快闪记忆体(带闪存的现场可编程微控制器)
文件页数: 7/83页
文件大小: 369K
代理商: PSD813FH
Prelimnary
PSD813FN/FH
7
The following table describes the pin names and pin functions of the PSD813FN/FH. Pins
that have multiple names and/or functions are defined by configuration.
Table 3.
PSD813FN/FH
Pin
Descriptions
Pin Name
Pin
Type
Function Description
ADIO0–7
30–37
I/O
Address/Data Port, interface to Microcontroller Bus
1. Input pins for multiplexed low order address/data byte.
ALE or AS latches address A0-7 for input to PLDs.
The PSD drives data out only if read is active and one of
the internal PSD functional blocks is selected.
A8–15
39–46
I/O
Address Port, interface to Microcontroller Bus
1. Address A8-15 inputs.
CNTL0
47
I
Write Input pin with multiple configurations. Depending on
the MCU interface selected, this pin can be:
1. WR – active low write input
2. R_W – read/write pin, low for write bus cycle
3. Control signal (CNTL0) input to PLD
(WR,
R_W)
CNTL1
50
I
Read or Data Strobe Input pin with multiple configurations.
Depending on the MCU interface selected, this pin can be:
1. RD – active low read input
2. E – E clock input.
During a write bus cycle, E is high and R/W is low
During a read bus cycle, E is high and R/W is high
3. DS – Data Strobe, active low
4. Control signal (CNTL1) input to PLD
(RD,
E, DS)
CNTL2
49
I
Read or other Control input pin with multiple configurations.
Depending on the MCU interface selected, this pin can be:
1. PSEN – Program Select enable, active low in code fetch
bus cycle
2. Control signal (CNTL2) input or general input to PLD
(PSEN)
Reset
48
I
Active low input. Resets I/O Ports, PLD Micro
Cells and
some of the Configuration Registers. Must be active at
power up.
PA0
PA1
PA2
PA3
29
28
27
25
I/O
Port A, PA0 – 3. This port is pin configurable and has
multiple functions:
1. MCU I/O – standard output or input port
2. External chip select (ECSPLD) output, or input to GPLD
3. Latched address outputs (see Table 4)
4. As Data Bus Port (D0–3) in non-multiplexed bus
configuration
5. Peripheral I/O mode
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