M306V2 Mitsubishi, M306V2 Datasheet - Page 76

• Manufacturer Part Number: M306V2
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

76
Table 2.9.2 No. of DMAC transfer cycles
2.9.2 DMAC Transfer Cycles
8-bit transfers
(DMBIT= “1”)
16-bit transfers
(DMBIT= “0”)
Transfer unit
Any combination of even or odd transfer read and write addresses is possible. Table 2.9.2 shows the
number of DMAC transfer cycles.
The number of DMAC transfer cycles can be calculated as follows:
Coefficient j, k
Internal ROM/RAM Internal ROM/RAM SFR area
No. of transfer cycles per transfer unit = No. of read cycles
No wait
1
Internal memory
(BYTE = “H”)
(BYTE = “H”)
(BYTE = “L”)
(BYTE= “L”)
Bus width
16-bit
16-bit
8-bit
8-bit
With wait
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
2
Access address
Even
Even
Even
Even
/OSD RAM
Odd
Odd
Odd
Odd
2
No. of read No. of write No. of read No. of write
Separate bus Separate bus
cycles
Single-chip mode
No wait
—
—
—
—
1
1
1
2
1
External memory
and ON-SCREEN DISPLAY CONTROLLER
cycles
j + No. of write cycles
With wait
—
—
—
—
1
1
1
2
MITSUBISHI MICROCOMPUTERS
2
M306V2ME-XXXFP
Memory expansion mode
Microprocessor mode
cycles
1
1
1
1
1
2
2
2
M306V2EEFP
Multiplex
bus
3
k
cycles
1
1
1
1
1
2
2
2
Rev. 1.0