Pin No.
Pin Name
Type
Description
92, 93, 94,
95, 97, 98,
RA [11 : 0]
OUT (TS)
RAM ADDRESS : Address for DRAM
99, 100, 102,
These pins are multiplexed address output.
103, 104, 105
107
ROEB
OUT (TS)
OUTPUT ENABLE : OE for DRAM
108
RRAS0B
OUT (TS)
ROW ADDRESS STROBE 0 : RAS for DRAM
109
RCAS1B/
OUT (TS)
COLUMN ADDRESS STROBE 1/WRITE ENABLE 1 : CAS1/WE1 for DRAM
RWE1B
In case of 16 bit data bus is selected, set CAS decode or WE decode by setting
internal registers.
110
RWE0B
OUT (TS)
WRITE ENABLE 0 : WE 0 for DRAM
Write strobe in case of 16 bit data bus is selected.
111
RCAS0B
OUT (TS)
COLUMN ADDRESS STROBE 0 : CAS0 for DRAM
In case of 16 bit bus size is selected, this pin is used by a strobe.
113, 114, 115,
116, 118, 119,
120, 121, 123, RD [15 : 0]
I/O (PU)
RAM DATA : Data for DRAM
124, 125, 126,
Possible to set bus size (16 bit/8bit) by setting internal registers.
128, 129, 130,
131
Buffer Memory Interface
45
Pin No.
Pin Name
Type
Description
9
MONIT0
OUT
Monitor 0 : Monitor pin
This pin is as follows by setting register 0X3E.
Monitor
IN
Input Pin
OUT
Output Pin
I/O
Input/Output Pin
IN (PU)
Input Pin with Internal Pullup Resister
IN (PD)
Input Pin with Internal Pulldown Resister
I/O (PU) :
Input/Output Pin with Internal Pullup Resister
I/O (PD) :
Input/Output Pin with Internal Pulldown Resister
OUT (TS) :
Three State Output Pin
OUT (OD) :
Open Drain Output Pin
OUT (PU, TS) : Three State Output Pin with Internal Pullup Resister
