参数资料
型号: SPAK56F826BU80
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 16-BIT, 80 MHz, OTHER DSP, PQFP100
封装: LQFP-100
文件页数: 2/53页
文件大小: 829K
代理商: SPAK56F826BU80
10
DSP56F826 Preliminary Technical Data
MOTOROLA
D0
34
Input/Output
Data Bus— D0–D15 specify the data for external program or data
memory accesses. D0–D15 are tri-stated when the external bus is
inactive.
D1
35
D2
36
D3
37
D4
38
D5
39
D6
40
D7
41
D8
42
D9
43
D10
44
D11
46
D12
47
D13
48
D14
49
D15
50
PS
29
Output
Program Memory Select—PS is asserted low for external program
memory access.
DS
28
Output
Data Memory Select—DS is asserted low for external data memory
access.
RD
26
Output
Read Enable—RD is asserted during external memory read cycles.
When RD is asserted low, pins D0–D15 become inputs and an
external device is enabled onto the DSP data bus. When RD is
deasserted high, the external data is latched inside the DSP. When
RD is asserted, it qualifies the A0–A15, PS, and DS pins. RD can be
connected directly to the OE pin of a Static RAM or ROM.
WR
27
Output
Write Enable—WR is asserted during external memory write cycles.
When WR is asserted low, pins D0–D15 become outputs and the
DSP puts data on the bus. When WR is deasserted high, the external
data is latched inside the external device. When WR is asserted, it
qualifies the A0–A15, PS, and DS pins. WR can be connected directly
to the WE pin of a Static RAM.
Table 3. DSP56F826 Signal and Package Information for the 100 Pin LQFP
Signal
Name
Pin No.
Type
Description
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