參數(shù)資料
型號: PSD4256G6V-10UIT
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 1M X 8 FLASH, 52 I/O, PIA-GENERAL PURPOSE, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 79/127頁
文件大小: 1091K
代理商: PSD4256G6V-10UIT
PSD4256G6V
Decode PLD (DPLD)
16
Decode PLD (DPLD)
The DPLD, shown in Figure 12: DPLD logic array, is used for decoding the address for
internal and external components. The DPLD can be used to generate the following decode
signals:
8 Sector Select (FS0-FS15) 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 (three product terms)
1 internal CSIOP Select (PSD Configuration register) signal
1 JTAG Select signal (enables JTAG-ISP on Port E)
2 internal Peripheral Select signals (Peripheral I/O mode).
Figure 12.
DPLD logic array
1.
The address inputs are A19-A4 when in 80C51XA mode.
2.
Additional address lines can be brought in the PSD via Port A, B, C, D, or F.
(INPUTS)
(32)
(8)
(16)
(1)
PDN (APD OUTPUT)
I /O PORTS (PORT A,B,C,F)
(8)
PGR0 - PGR7
(8)
MCELLA.FB [7:0] (FEEDBACKS)
MCELLB.FB [7:0] (FEEDBACKS)
A[15:0]
*
(4)
(3)
PD[3:0] (ALE,CLKIN,CSI)
CNTRL[2:0]
(READ/WRITE CONTROL SIGNALS)
(1)
RESET
RD_BSY
RS0
CSIOP
PSEL0
PSEL1
16 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
FS15
3
JTAGSEL
AI04925B
1
4 SECONDARY
FLASH
MEMORY
SECTOR
SELECTS
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