参数资料
型号: M38039MC-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 16.8 MHz, MICROCONTROLLER, PQFP64
封装: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-64
文件页数: 133/136页
文件大小: 2007K
代理商: M38039MC-XXXFP
96
3803/3804 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
q 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 Fig-
ure 89, the M38039FF/M38049FF outputs 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 M38039FF/M38049FF
enters the read mode, the user can read out the successive 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 immedi-
ately after power-on is 0016.
Fig. 89 Timings during reading
Address
Valid address
tWC
tCH
tCS
tRC
ta(CE)
tDF
tWRR
tWP
tRRW
ta(OE)
tDH
tVSC
tCLZ
tOLZ
tDS
ta(AD)
VIH
VIL
VIH
VIL
VIH
VIL
VIH
VIL
VIH
VIL
VPPH
VPPL
CE
OE
WE
Data
VPP
Dout
0016
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