參數(shù)資料
型號: PSD813FH
英文描述: Field Programmble Microcontroller Peripherals With Flash Memory(帶閃存的現(xiàn)場可編程微控制器)
中文描述: 場可編程微控制器外圍設(shè)備與快閃記憶體(帶閃存的現(xiàn)場可編程微控制器)
文件頁數(shù): 49/83頁
文件大小: 369K
代理商: PSD813FH
Prelimnary
PSD813FN/FH
49
Oher Features
Page Register
The four-bit Page Register increases the addressing capability of the microcontroller by a
factor of 16. The contents of the Register can also be read by the microcontroller. The
outputs of the Page Register (PGR0-PGR3) are inputs to the PLD and can be included in
the Flash, Boot EPROM, or SRAM chip select equations.
Figure 24 shows the Page Register. The four Flip-Flops in the Register are connected to the
internal data bus D0–D3. The microcontroller can write to or read from the Page Register.
The Register can operate as an independent register and used in general purpose logic if
page expansion is not needed.
RESET
D0-D3
R/W
D0
Q0
Q1
Q2
Q3
D1
D2
D3
PAGE
REG.
PGR0
PGR1
PGR2
PGR3
DPLD
GPLD
ECSPLD
RS0,
CSBOOT0-7,
FS0-7
PLD
Figure 22. Page Register
Reset Input
The PSD813FN/FH has an active low reset input which loads internal configurations and
clear some of the registers. Figure 33 shows the reset timing requirement. The active low
range has a minimum t
NLNH
duration. After the rising edge of reset, the PSD813FN/FH
remains in the reset state during t
OPR
range. The device must be reset at power-up prior
to use. IMPORTANT: The PSD must be out of the reset condition prior to or concurrent with
the MCU coming out of reset.
While the reset input is active, the PLD is active and the outputs are determined by the
PSDabel equations. The chip status during reset and power down is shown in Table 30.
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