M306V0ME-107FP MITSUBISHI [Mitsubishi Electric Semiconductor], M306V0ME-107FP Datasheet - Page 30
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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Table 2.4.4 Operation of RD, WRL, and WRH signals
Figure 2.4.4 Chip select control register
Table 2.4.5 Operation of RD, WR, and BHE signals
Data bus width
Data bus width
(BYTE = “H”)
(BYTE = “L”)
(BYTE = “L”)
Chip select control register
(3) Read/write signals
16-bit
b7
With a 16-bit data bus (BYTE pin =“L”), bit 2 of the processor mode register 0 (address 0004
the combinations of RD, BHE, and WR signals or RD, WRL, and WRH signals. With an 8-bit data bus
(BYTE pin = “H”), use the combination of RD, WR, and BHE signals. (Set bit 2 of the processor mode
register 0 (address 0004
After a reset has been cancelled, the combination of RD, WR, and BHE signals is automatically se-
lected.
When switching to the RD, WRL, and WRH combination, do not write to external memory until bit 2 of
the processor mode register 0 (address 0004
Note: Before attempting to change the contents of the processor mode register 0, set bit 1 of the
8-bit
16-bit
b6
b5
protect register (address 000A
b4
b3
RD
H
H
H
H
b2
L
L
L
L
RD
H
H
H
L
b1
_____ ________
_____
_____
b0
_____ _________
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
16
________
______
Bit symbol
WR
CS0
CS1
CS2
CS3
CS0W
CS1W
CS2W
CS3W
H
H
H
H
L
L
L
L
) to “0”.) Tables 2.4.4 and 2.4.5 show the operation of these signals.
WRL
Symbol
CSR
H
H
L
L
________
Not used
Not used
______
_________
BHE
CS0 output enable bit
CS1 output enable bit
CS2 output enable bit
CS3 output enable bit
CS0 wait bit
CS1 wait bit
CS2 wait bit
CS3 wait bit
16
_________
H
H
L
L
L
L
) to “1”.
WRH
_____
H
H
L
L
Bit name
16
______
) has been set (Note).
H / L
H / L
Address
A0
0008
H
H
_____
Read data
Write 1 byte of data to even address
Write 1 byte of data to odd address
Write data to both even and odd addresses
L
L
L
L
16
________
_____
_______
Write 1 byte of data to odd address
Read 1 byte of data from odd address
Write 1 byte of data to even address
Read 1 byte of data from even address
Write data to both even and odd addresses
Read data from both even and odd addresses
Write 1 byte of data
Read 1 byte of data
______
When reset
Status of external data bus
0 : Chip select output disabled
1 : Chip select output enabled
0 : Wait state inserted
1 : No wait state
and ON-SCREEN DISPLAY CONTROLLER
01
_________
(Normal port pin)
16
Status of external data bus
MITSUBISHI MICROCOMPUTERS
________
M306V0ME-XXXFP
Function
M306V0EEFP
16
R
) select
W
Rev. 1.0
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