參數(shù)資料
型號(hào): PSD8342V10JT
廠商: 意法半導(dǎo)體
英文描述: Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
中文描述: 閃光私營(yíng)部門,3.3V電源,為8位微控制器2兆256千位雙閃存和64千位的SRAM
文件頁(yè)數(shù): 25/89頁(yè)
文件大?。?/td> 615K
代理商: PSD8342V10JT
25/89
PSD834F2V
Configuration Modes for MCUs with Separate
Program and Data Spaces. Separate
Modes.
Program space is separated from Data
space. For example, Program Select Enable
(PSEN, CNTL2) is used to access the program
Space
code from the primary Flash memory, while Read
Strobe (RD, CNTL1) is used to access data from
the secondary Flash memory, SRAM and I/O Port
blocks. This configuration requires the VM register
to be set to 0Ch (see Figure 7).
Figure 7. 8031 Memory Modules – Separate Space
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, CNTL2)
Program
and
or Read Strobe (RD, CNTL1). For example, to
configure the primary Flash memory in Combined
space, bits b2 and b4 of the VM register are set to
1 (see Figure 8).
Figure 8. 8031 Memory Modules – Combined Space
Primary
Flash
Memory
DPLD
Secondary
Flash
Memory
SRAM
RS0
CSBOOT0-3
FS0-FS7
CS
CS
CS
OE
OE
RD
PSEN
OE
AI02869C
Primary
Flash
Memory
DPLD
Secondary
Flash
Memory
SRAM
RS0
CSBOOT0-3
FS0-FS7
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
AI02870C
相關(guān)PDF資料
PDF描述
PSD9342V10JT Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
PSD8342V10MIT Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
PSD9342V10MIT Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
PSD8342V10MT Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
PSD9342V10MT Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
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