參數(shù)資料
型號： PSD4256G6
廠商： 意法半導(dǎo)體
英文描述： Current Mode PWM Controller 16-SOIC 0 to 70
中文描述： Flash在系統(tǒng)可編程ISP的周邊的16位微控制器
文件頁數(shù)： 25/100頁
文件大?。?/td> 759K
代理商： PSD4256G6
25/100
PSD4256G6V
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
DETAILED OPERATION
As shown in Figure 4, page 15, the PSD consists
of six major types of functional blocks:
I
Memory Blocks
I
MCU Bus Interface
I
I/O Ports
I
Power Management Unit (PMU)
I
JTAG-ISP Interface
I
The functions of each block are described in the
following sections. Many of the blocks perform
multiple functions, and are user configurable.
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.
Table 28. Memory Block Size and Organization
Primary Flash Memory
Secondary Flash Memory
SRAM
Sector
Number
Sector Size
(Bytes)
Sector Select
Signal
Sector Size
(Bytes)
Sector Select
Signal
SRAM Size
(Bytes)
SRAM Select
Signal
0
64K
FS0
16K
CSBOOT0
32K
RS0
1
64K
FS1
8K
CSBOOT1
2
64K
FS2
8K
CSBOOT2
3
64K
FS3
32K
CSBOOT3
4
64K
FS4
5
64K
FS5
6
64K
FS6
7
64K
FS7
8
64K
FS8
9
64K
FS9
10
64K
FS10
11
64K
FS11
12
64K
FS12
13
64K
FS13
14
64K
FS14
15
64K
FS15
Total
1024K
16 Sectors
64K
4 Sectors
32K
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