M306V0ME-107FP MITSUBISHI [Mitsubishi Electric Semiconductor], M306V0ME-107FP Datasheet - Page 32
M306V0ME-107FP
Manufacturer Part Number
M306V0ME-107FP
Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet
1.M306V0ME-107FP.pdf
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Note: The RDY signal cannot be received immediately prior to a software wait.
Table 2.4.6 Microcomputer status in ready state (Note)
Figure 2.4.6 Example of RD signal extended by RDY signal
Oscillation
R/W signal, address bus, data bus, CS
ALE signal, HLDA, programmable I/O ports
Internal peripheral circuits
___
(5) RDY signal
________
RDY signal facilitates access of external devices that require a long time for access. As shown in
Figure 2.4.6, if an “L” is being input to the RDY pin at the BCLK falling edge, the bus turns to the wait
state. If an “H” is being input to the RDY pin at the BCLK falling edge, the bus cancels the wait state.
Table 2.4.6 shows the microcomputer state in the wait state. Figure 2.4.6 shows the example of the
_____
RD signal being extended using the RDY signal.
The RDY signal is valid when accessing the external area during the bus cycle in which bits 4 to 7 of
the chip select control register (address 0008
“1” to all bits 4 to 7 of the chip select control register (address 0008
treated as properly as in non-using.
________
________
________
__________
In an instance of separate bus
In an instance of multiplexed bus
BCLK
RD
CS
(i=0 to 3)
RDY
BCLK
RD
CS
(i=0 to 3)
RDY
i
i
Item
_____
: Wait using RDY signal
: Wait using software
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
_____
Accept timing of RDY signal
________
________
tsu(RDY - BCLK)
________
16
________
On
Maintain status when RDY signal received
On
) are set to “0.” The RDY signal is invalid when setting
Accept timing of RDY signal
tsu(RDY - BCLK)
and ON-SCREEN DISPLAY CONTROLLER
________
MITSUBISHI MICROCOMPUTERS
Status
________
16
), but the RDY pin should be
M306V0ME-XXXFP
M306V0EEFP
________
Rev. 1.0
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