參數(shù)資料
型號(hào)： MBM29LV651UE-90TN
廠商： SPANSION LLC
元件分類： PROM
英文描述： 4M X 16 FLASH 3V PROM, 90 ns, PDSO48
封裝： PLASTIC, TSOP1-48
文件頁(yè)數(shù)： 10/57頁(yè)
文件大小： 640K
代理商： MBM29LV651UE-90TN
MBM29LV650UE90/651UE90
17
s
s FUNCTIONAL DESCRIPTION
Read Mode
The MBM29LV650UE/651UE have two control functions required to obtain data at the outputs. CE is the power
control and used for a device selection. OE is the output control and used to gate data to the output pins if a
device is selected.
Address access time (tACC) is equal to the delay from stable addresses to valid output data. The chip enable
access time (tCE) is the delay from stable addresses and stable CE to valid data at the output pins. The output
enable access time (tOE) is the delay from the falling edge of OE to valid data at the output pins, assuming the
addresses have been stable for at least tACC-tOE time. When reading out a data without changing addresses after
power-up, it is necessary to input hardware reset or to change CE pin from “H” or “L”.
Standby Mode
There are two ways to implement the standby mode on the MBM29LV650UE/651UE devices, one using both
the CE and RESET pins; the other via the RESET pin only.
When using both pins, a CMOS standby mode is achieved with CE and RESET inputs both held at VCC ±0.3 V.
Under this condition the current consumed is less than 5
A Max. During Embedded Algorithm operation, VCC
active current (ICC2) is required even CE = “H”. The device can be read with standard access time (tCE) from either
of these standby modes.
When using the RESET pin only, CMOS standby mode is achieved with RESET input held at VSS ±0.3 V (CE =
“H” or “L”). Under this condition the current consumed is less than 5
A Max. Once the RESET pin is taken high,
the device requires tRH of wake up time before outputs are valid for read access.
In the standby mode the outputs are in the high impedance state, independent of the OE input.
Automatic Sleep Mode
Automatic sleep mode works to restrain power consumption during read-out of MBM29LV650UE/651UE data.
This is effective with an application requesting low power consumption such as handy terminals.
To activate this mode, MBM29LV650UE/651UE automatically switch themselves to low power mode when
MBM29LV650UE/651UE addresses remain stable during access fine of 150 ns. It is not necessary to control
CE, WE, and OE on the mode. Under the mode, the current consumed is typically 1
A (CMOS Level).
Since the data are latched during this mode, the data are read out continuously. If the addresses are changed,
the mode is canceled automatically and MBM29LV650UE/651UE read out the data for changed addresses.
Output Disable
With the OE input at a logic high level (VIH), output from the devices are disabled. This causes the output pins
to be in a high impedance state.
Autoselect
Autoselect mode allows the reading out of a binary code from the devices and identifies its manufacturer and
type. This mode is intended for use by programming equipment for the purpose of automatically matching the
devices to be programmed with its corresponding programming algorithm.
To activate this mode, the programming equipment must force VID on address pin A9. Two identifier words may
then be sequenced from the devices outputs by toggling address A0 from VIL to VIH. All addresses are DON’T
CARES except A0, A1, and A6. (recommend to set VIL for other addresses pins.)
The manufacturer and device codes may also be read via the command register, for instances when the
MBM29LV650UE/651UE are erased or programmed in a system without access to high voltage on the A9 pin.
The command sequence is illustrated in “MBM29LV650UE/651UE Command Definitions Table” in s DEVICE
BUS OPERATION. (Refer to “Autoselect Command” in s COMMAND DEFINITIONS.)
Word 0 (A0 = VIL) represents the manufacturer’s code (Fujitsu = 04h) and word 1 (A0 = VIH) represents the device
identifier code (MBM29LV650UE/651UE = 22D7h). These two words are given in “MBM29LV650UE/651UE
Sector Group Protection Verify Autoselect Codes Table” and “Extended Autoselect Code Table” in s DEVICE
BUS OPERATION. All identifiers for manufactures and device will exhibit odd parity with DQ7 defined as the
parity bit. In order to read the proper device codes when executing the autoselect, A1 must be VIL.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MBM29LV651UE90TR 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64M (4M x 16) BIT
MBM29LV652UE 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64M (4M X 16) BIT
MBM29LV652UE-12 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64M (4M X 16) BIT
MBM29LV652UE-90 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64M (4M X 16) BIT
MBM29LV652UE90PBT 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64M (4M X 16) BIT
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