參數(shù)資料
型號： M58LT128GSB1ZA5
廠商： 意法半導(dǎo)體
英文描述： 128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
中文描述： 128Mbit（8兆x16插槽，多銀行，多層次，多突發(fā)）1.8V電源安全閃存
文件頁數(shù)： 42/98頁
文件大?。?/td> 693K
代理商： M58LT128GSB1ZA5
7 Read modes
M58LT128GST, M58LT128GSB
42/98
7
Read modes
Read operations can be performed in two different ways depending on the settings in the
Configuration Register. If the clock signal is ‘don’t care’ for the data output, the read operation is
asynchronous; if the data output is synchronized with clock, the read operation is synchronous.
The read mode and format of the data output are determined by the Configuration Register.
(See Configuration Register section for details). All banks support both asynchronous and
synchronous read operations.
7.1
Asynchronous Read modes
In Asynchronous Read operations the clock signal is ‘don’t care’. The device outputs the data
corresponding to the address latched, that is the memory array, Status Register, Common
Flash Interface or Electronic Signature depending on the command issued. CR15 in the
Configuration Register must be set to ‘1’ for asynchronous operations. In Asynchronous Read
mode, the WAIT signal is always deasserted.
The device features an Automatic Standby mode. During Asynchronous Read operations, after
a bus inactivity of 150ns, the device automatically switches to the Automatic Standby mode. In
this condition the power consumption is reduced to the standby value and the outputs are still
driven.
Asynchronous Read operations can be performed in two different ways, Asynchronous
Random Read and Asynchronous Page Read.
7.1.1
Asynchronous Random Read
Asynchronous Random Read operations are controlled by the Latch Enable, L, signal.
A valid bus operation involves setting the desired address on the Address Inputs, setting Chip
Enable and Latch Enable Low, V
IL
, and keeping Write Enable High, V
IH
. The address is latched
on the rising edge of Latch Enable, L, before the value is output on the data bus. Once latched,
the Address Inputs can change. Set Output Enable Low, V
IL
, to read the data on the Data
Inputs/Outputs.
See
Table 22: Asynchronous Read AC Characteristics
, and
Figure 9: Asynchronous Random
Access Read AC Waveforms
for details.
7.1.2
Asynchronous Page Read
Only Asynchronous Page Read takes full advantage of the internal page storage so different
timings are applied. In Asynchronous Page Read mode, a Page of data is internally read and
stored in a Page Buffer. The Page size is 8 Words and is addressed by address inputs A0, A1
and A2.
The first read operation within the Page has the normal access time (t
AVQV
), subsequent reads
within the same Page have much shorter access times (t
AVQV1
). If the Page changes then the
normal longer timings apply again.
See
Table 22: Asynchronous Read AC Characteristics
,
Figure 10: Asynchronous Page Read
AC Waveforms
for details.
相關(guān)PDF資料
PDF描述
M58LT128GS 128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GST1ZA5E 128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GST1ZA5F 128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GST 128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LV064A150ZA1T 64 Mbit 4Mb x16 or 2Mb x32, Uniform Block, Burst 3V Supply Flash Memories
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M58LT128GSB1ZA5E 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GSB1ZA5F 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GST 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GST1ZA5 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128Mbit (8Mb x16, Multiple Bank, Multi-Level, Burst) 1.8V Supply Secure Flash Memories
M58LT128GST1ZA5E 制造商:STMicroelectronics 功能描述:
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