參數(shù)資料
型號: PSD4256G6
廠商: 意法半導(dǎo)體
英文描述: Current Mode PWM Controller 16-SOIC 0 to 70
中文描述: Flash在系統(tǒng)可編程ISP的周邊的16位微控制器
文件頁數(shù): 46/100頁
文件大?。?/td> 759K
代理商: PSD4256G6
PSD4256G6V
46/100
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
External Chip Select
The CPLD also provides eight External Chip Se-
lect (ECS0-ECS7) outputs that can be used to se-
lect external devices. Each External Chip Select
(ECS0-ECS7) consists of one product term that
can be configured active High or Low.
The output enable of the pin is controlled by either
the output enable product term or the Direction
Register. (See Figure 17.)
Figure 17. External Chip Select Signal
Figure 18. Handshaking Communication Using Input Macrocells
P
POLARITY
BIT
PORT PIN
ECS PT
ECS
To Port C or F
ENABLE (.OE) PT
DIRECTION
REGISTER
C
Port C or Port F
AI04927
MASTER
MCU
MCU-RD
MCU-RD
MCU-WR
SLAVE–WR
SLAVE–CS
MCU-WR
D[7:0]
D[7:0]
CPLD
D
Q
Q
D
PORT A
DATA OUT
REGISTER
PORT A
INPUT
MACROCELL
PORT A
SLAVE–READ
SLAVE
MCU
RD
WR
AI02877C
PSD
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