mb91101 Fujitsu Microelectronics, Inc., mb91101 Datasheet - Page 12

• Manufacturer Part Number: mb91101
• Description: 32-bit Risc Microcontroller Cmos
• Manufacturer: Fujitsu Microelectronics, Inc.

12
MB91101/MB91101A
Pin name
RAS0
RAS1
CS0L
CS0H
CS1L
CS1H
DW0
DW1
DRAM CONTROL PIN
Area 4 RAS
Area 5 RAS
Area 4 CASL
Area 4 CASH
Area 5 CASL
Area 5 CASH
Area 4 WE
Area 5 WE
2CAS/1WR mode
Data bus 16-bit mode
Area 4 RAS
Area 5 RAS
Area 4 CAS
Area 4 WEL
Area 5 CAS
Area 5 WEL
Area 4 WEH
Area 5 WEH
1CAS/2WR mode
Data bus 8-bit mode
Area 4 RAS
Area 5 RAS
Area 4 CAS
Area 4 CAS
Area 5 CAS
Area 5 CAS
Area 4 WE
Area 5 WE
—
Correspondence of “L”,
“H” to lower address 1
bit (A0) in data bus 16-
bit mode
“L”: “0”
“H”: “1”
CASL:CAS which A0
corresponds to “0” area
CASH:CAS which A0
corresponds to “1” area
WEL: WE which A0 cor-
responds to “0” area
WEH:WE which A0 cor-
responds to “1” area
Remarks