參數(shù)資料
型號: PSD813F2V
廠商: 意法半導(dǎo)體
英文描述: Flash In-System Programmable (ISP) Peripherals for8-bits MCUs, 3V
中文描述: Flash在系統(tǒng)可編程(ISP)的外設(shè)for8位微控制器,采用3V
文件頁數(shù): 45/110頁
文件大小: 1720K
代理商: PSD813F2V
45/110
PSD813F2V, PSD833F2V, PSD853F2V, PSD854F2V
PSD Interface to a Non-Multiplexed 8-Bit Bus
Figure
20
shows an example of a system using a
MCU with an 8-bit non-multiplexed bus and a
PSD. The address bus is connected to the ADIO
Port, and the data bus is connected to Port A. Port
A is in tri-state mode when the PSD is not access-
ed by the MCU. Should the system address bus
exceed sixteen bits, Ports B, C, or D may be used
for additional address inputs.
Data Byte Enable Reference
MCUs have different data byte orientations. Table
17
shows how the PSD interprets byte/word oper-
ations in different bus WRITE configurations.
Even-byte refers to locations with address A0
equal to '0' and odd byte as locations with A0 equal
to ’1.’
MCU Bus Interface Examples
Figure
21
through
25
show examples of the basic
connections between the PSD and some popular
MCUs. The PSD Control input pins are labeled as
to the MCU function for which they are configured.
The MCU bus interface is specified using the PS-
Dsoft Express Configuration.
Table 17. Eight-Bit Data Bus
Figure 20. An Example of a Typical 8-bit Non-Multiplexed Bus Interface
BHE
A0
D7-D0
X
0
Even Byte
X
1
Odd Byte
MCU
WR
RD
BHE
ALE
RESET
D[7:0]
A[15:0]
A[23:16]
D[7:0]
ADIO
PORT
PORT
A
PORT
B
PORT
C
WR (CNTRL0)
RD (CNTRL1)
BHE (CNTRL2)
RST
ALE (PD0)
PORT D
(OPTIONAL)
PSD
AI02879C
相關(guān)PDF資料
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PSD813F2V-15J1T Flash In-System Programmable (ISP) Peripherals for8-bits MCUs, 3V
PSD833F2V Flash In-System Programmable (ISP) Peripherals for8-bits MCUs, 3V
PSD833F2V-15J1T Flash In-System Programmable (ISP) Peripherals for8-bits MCUs, 3V
PSD853F2V Flash In-System Programmable (ISP) Peripherals for8-bits MCUs, 3V
PSD853F2V-15J1T Flash In-System Programmable (ISP) Peripherals for8-bits MCUs, 3V
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PSD813F2V-12JI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs