參數(shù)資料
型號(hào): PSD4235G2-A-90MI
廠商: 意法半導(dǎo)體
英文描述: Flash In-System-Programmable Peripherals for 16-Bit MCUs
中文描述: Flash在系統(tǒng)可編程外設(shè)的16位微控制器
文件頁(yè)數(shù): 32/93頁(yè)
文件大?。?/td> 503K
代理商: PSD4235G2-A-90MI
Preliminary Information
PSD4000 Series
29
RESET
DATA BUS
R/W
D0
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
D1
D2
D3
D4
D5
D6
D7
PAGE
REGISTER
PGR0
PGR1
PGR2
PGR3
DPLD
AND
GPLD
INTERNAL
SELECTS
AND LOGIC
FLASH
PLD
PGR4
PGR5
PGR6
PGR7
Figure 8. Page Register
The
PSD4000
Functional
Blocks
(cont.)
9.1.4 Page Register
The eight bit Page Register increases the addressing capability of the microcontroller by a
factor of up to 256. The contents of the register can also be read by the microcontroller.
The outputs of the Page Register (PGR0-PGR7) are inputs to the PLD decoder and
can be included in the Flash Memory, secondary Flash memory, and SRAM chip select
equations.
If memory paging is not needed, or if not all 8 page register bits are needed for memory
paging, then these bits may be used in the PLD for general logic. See Application
Notes.
Figure 8 shows the Page Register. The eight flip flops in the register are connected to the
internal data bus. The microcontroller can write to or read from the Page Register. The
Page Register can be accessed at address location CSIOP + E0h.
相關(guān)PDF資料
PDF描述
PSD4235G2-A-90U Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G2-A-90UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G2-B-12JI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G2-B-12M Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G2-B-12MI Flash In-System-Programmable Peripherals for 16-Bit MCUs
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