参数资料
型号: uPSD3212
厂商: 意法半导体
英文描述: Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可编程系统器件)
中文描述: 闪存可编程系统器件与8032微控制器内核(嵌入高速“8032微控制器核”的闪存型可编程系统器件)
文件页数: 97/155页
文件大小: 1055K
代理商: UPSD3212
97/155
μPSD321X
Separate Space Mode.
Program space is sepa-
rated from Data space. For example, Program Se-
lect Enable (PSEN) is used to access the program
code from the primary Flash memory, while READ
Strobe (RD) is used to access data from the sec-
ondary Flash memory, SRAM and I/O Port blocks.
This configuration requires the VM Register to be
set to 0Ch (see Figure 45).
Combined Space Modes.
The
Data spaces are combined into one memory
space that allows the primary Flash memory, sec-
ondary Flash memory, and SRAM to be accessed
by either Program Select Enable (PSEN) or READ
Strobe (RD). For example, to configure the prima-
ry Flash memory in Combined space, Bits b2 and
b4 of the VM Register are set to ’1’ (see Figure 46).
Program
and
Figure 45. Separate Space Mode
Figure 46. Combined Space Mode
Primary
Flash
Memory
DPLD
Secondary
Flash
Memory
SRAM
RS0
CSBOOT0-1
FS0-FS3
CS
CS
CS
OE
OE
RD
PSEN
OE
AI07433
Primary
Flash
Memory
DPLD
Secondary
Flash
Memory
SRAM
RS0
CSBOOT0-1
FS0-FS3
RD
CS
CS
CS
RD
OE
OE
VM REG BIT 2
PSEN
VM REG BIT 0
VM REG BIT 1
VM REG BIT 3
VM REG BIT 4
OE
AI07434
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