PSD4235G2V-10U STMICROELECTRONICS [STMicroelectronics], PSD4235G2V-10U Datasheet - Page 25
PSD4235G2V-10U
Manufacturer Part Number
PSD4235G2V-10U
Description
Flash In-System Programmable (ISP) Peripherals for 16-bit MCUs
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.PSD4235G2V-10U.pdf
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DETAILED OPERATION
As shown in Figure 4, page 15, the PSD consists
of six major types of functional blocks:
Table 28. Memory Block Size and Organization
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Memory Blocks
MCU Bus Interface
I/O Ports
Power Management Unit (PMU)
JTAG-ISP Interface
The functions of each block are described in the
following sections. Many of the blocks perform
multiple functions, and are user configurable.
Number
Sector
Total
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
Sector Size
(Bytes)
Primary Flash Memory
1024K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
Sector Select
16 Sectors
Signal
FS10
FS11
FS12
FS13
FS14
FS15
FS0
FS1
FS2
FS3
FS4
FS5
FS6
FS7
FS8
FS9
Sector Size
Secondary Flash Memory
(Bytes)
16K
32K
64K
8K
8K
Memory Blocks
The PSD has the following memory blocks:
– Primary Flash memory
– Secondary Flash memory
– SRAM
The Memory Select signals for these blocks origi-
nate from the Decode PLD (DPLD) and are user-
defined in PSDsoft.
Table 28 summarizes the sizes and organizations
of the memory blocks.
Sector Select
CSBOOT0
CSBOOT1
CSBOOT2
CSBOOT3
4 Sectors
Signal
SRAM Size
(Bytes)
32K
32K
SRAM
PSD4256G6V
SRAM Select
Signal
RS0
25/100
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