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參數(shù)資料
| 型號： | ML54053 |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 存儲控制器/管理單元 |
| 英文描述： | IDE COMPATIBLE, FLASH MEMORY DRIVE CONTROLLER, PQFP120 |
| 封裝： | 14 X 14 MM, 0.40 MM PITCH, PLASTIC, TQFP-120 |
| 文件頁數(shù)： | 25/26頁 |
| 文件大?。?/td> | 235K |
| 代理商： | ML54053 |
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Semiconductor
ML54053
4/22
3.2 NAND Flash Memory Interface
Signal Name
maio [7:0]
macle
maale
maren
mawen
marbn
mbio [7:0]
mbcle
mbale
mbren
mbwen
Type
B
O
I
B
O
Pin Count
8
1
8
1
Description
Port A I/O bus
Port A command latch enable signal (signal to control latching of an
operation command into a device)
Port A address latch enable signal (signal to control latching of an address
or input data into a device)
Port A read enable signal
Port A write enable signal (signal to latch data into a device)
Port A ready/busy signal (signal to check internal status of device)
Port B I/O bus
Port B command latch enable signal (signal to control latching of an
operation command into a device)
Port B address latch enable signal (signal to control latching of an address
or input data into a device)
Port B read enable signal
Port B write enable signal (signal to latch data into a device)
mbrbn
I
1
Port B ready/busy signal (signal to check internal status of device)
mcen [3:0]
O
4
Chip enable signals
Total 31 pins
mwpn
O
1
Write protect signal (signal to forcibly prohibit write and erase operations)
3.3 Extended Bus Interface
The extended bus interface is a signal line for the ML54053’s internal microcontroller. The
extended bus interface is used for purposes such as debugging.
*
In an external ROM connection mode, xah, xad, xrd, xwr, and xale are used to connect to
external ROM.
Signal Name
xah [15:8]
Type
B
Pin Count
8
Description
Address bus for extended bus
Total 23 pins
xad [7:0]
B
8
Address/data bus for extended bus
xrd
B
1
Read signal for extended bus
xwr
B
1
Write signal for extended bus
xale
B
1
Address latch enable signal for extended bus
xpsen
I
1
Program store enable signal for extended bus
xint
O
1
Interrupt signal for extended bus
xrst
O
1
Reset signal for extended bus
xclk
O
1
Clock signal for extended bus
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