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參數資料
型號: PSD854F4V-20
廠商: 意法半導體
英文描述: Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
中文描述: Flash在系統可編程(ISP)的周邊8位MCU,5V的
文件頁數: 35/110頁
文件大小: 1737K
代理商: PSD854F4V-20
35/110
PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
Decode PLD (DPLD)
The DPLD, shown in Figure
14
, is used for decod-
ing the address for internal and external compo-
nents. The DPLD can be used to generate the
following decode signals:
8 Sector Select (FS0-FS7) signals for the
primary Flash memory (three product terms
each)
4 Sector Select (CSBOOT0-CSBOOT3)
signals for the secondary Flash memory (three
product terms each)
1 internal SRAM Select (RS0) signal (two
product terms)
1 internal CSIOP Select (PSD Configuration
Register) signal
1 JTAG Select signal (enables JTAG on Port
C)
2 internal Peripheral Select signals
(Peripheral I/O mode).
Figure 14. DPLD Logic Array
(INPUTS)
(24)
(8)
(16)
(1)
PDN (APD OUTPUT)
I/O PORTS (PORT A,B,C)
(8)
PGR0 -PGR7
(8)
MCELLAB.FB [7:0] (FEEDBACKS)
MCELLBC.FB [7:0] (FEEDBACKS)
A[15:0]
*
(3)
(3)
PD[2:0] (ALE,CLKIN,CSI)
CNTRL[2:0] (READ/WRITE CONTROL SIGNALS)
(1)
(1)
RESET
RD_BSY
RS0
CSIOP
PSEL0
PSEL1
8 PRIMARY FLASH
MEMORY SECTOR SELECTS
SRAM SELECT
I/O DECODER
SELECT
PERIPHERAL I/O MODE
SELECT
CSBOOT 0
CSBOOT 1
CSBOOT 2
CSBOOT 3
FS0
FS7
3
3
3
3
3
3
3
3
3
3
3
3
2
JTAGSEL
AI02873D
FS1
FS2
FS3
FS6
FS5
FS4
1
1
1
1
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