psd813f3 STMicroelectronics, psd813f3 Datasheet - Page 35
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psd813f3
Manufacturer Part Number
psd813f3
Description
Flash In-system Programmable Isp Peripherals For 8-bit Mcus
Manufacturer
STMicroelectronics
Datasheet
1.PSD813F3.pdf
(110 pages)
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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:
Figure 14. DPLD Logic Array
I /O PORTS (PORT A,B,C)
MCELLAB.FB [7:0] (FEEDBACKS)
MCELLBC.FB [7:0] (FEEDBACKS)
PGR0 - PGR7
A [ 15:0 ]
PD [ 2:0 ] (ALE,CLKIN,CSI)
PDN (APD OUTPUT)
CNTRL [ 2:0 ] ( READ/WRITE CONTROL SIGNALS)
RESET
RD_BSY
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)
*
(INPUTS)
(24)
(16)
(8)
(8)
(8)
(3)
(3)
(1)
(1)
(1)
PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
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).
3
3
3
3
3
3
3
3
3
3
3
3
2
1
1
1
1
RS0
CSIOP
PSEL0
PSEL1
JTAGSEL
CSBOOT 0
CSBOOT 1
CSBOOT 2
CSBOOT 3
FS0
FS1
FS7
FS2
FS3
FS5
FS6
FS4
SRAM SELECT
PERIPHERAL I/O MODE
SELECT
I/O DECODER
SELECT
8 PRIMARY FLASH
MEMORY SECTOR SELECTS
AI02873D
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