M37754FFCGP Datasheet, PDF (19/68 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION

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MITSUBISHI MICROCOMPUTERS
M37754FFCGP
M37754FFCHP
SHINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
Read command
The microcomputer enters the read mode by inputting command
code “0016” in the first cycle. The command code is latched into the
___
internal command latch at the rising edge of the WE input. When the
address of a memory location to be read is input in the second cycle,
with control signals input at the timing shown in Figure 9, the
M37754FFCGP and the M37754FFCHP output the contents of the
specified address from the data I/O pins to the external.
The read mode is retained until any other command is latched into
the command latch. Consequently, once the M37754FFCGP and the
M37754FFCHP enter the read mode, the user can read out the suc-
cessive memory contents simply by changing the input address and
executing the second cycle only. Any command other than the read
command must be input beginning from its command code over
again each time the user execute it. The contents of the command
latch immediately after power-on is 0016.
VIH
Address
VIL
VIH
CE
VIL
VIH
OE
VIL
VIH
WE
VIL
VIH
Data
VIL
VPPH
VPP
VPPL
Valid address
tWC
tRC
tCH
ta(CE)
tCS
tRRW
tWP
tWRR
tDF
tVSC
tDS
0016
tDH
ta(OE)
tOLZ
Dout
tCLZ
tDH
ta(AD)
Fig. 9 Timings during reading
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