
RF5C296/RF5C396L/RB5C396/RF5C396
11
Symbol
Function
Pin No.
RF5C296 RF5C396*
1
LA23 to LA17
SA16 to SA0
AEN
BALE
SBHE#
REFRESH#
SD15 to SD0
IOR#
IOW#
MEMR#
MEMW#
IOCS16#
MEMCS16#
ZEROWS#
IOCHRDY
IRQn
ISA Bus System Address 23 to 17
ISA Bus System Address 16 to 0
Address Enable. High signal is input in DMA
mode.
Address Latch Enable. This signal latches LA23
pin to LA17 pin.
System Bus High Byte Enable
This active low signal indicates that an ISA-bus
refresh cycle is either requested or in progress.
System Data Bus
I/O Port Read
I/O Port Write
Memory Read
Memory Write
16bit I/O Transfer Mode Chip Select
16bit Memory Transfer Mode Chip Select
Zero Wait State
I/O Channel Ready. This active High signal indi-
cates that the accessed device on the ISA-bus is
ready to terminate the bus cycle.
Interrupt Request Signal.
IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11,
IRQ12, IRQ14, IRQ15. Level mode interrupt or
Edge mode interrupt is programmable. IRQ12
can be used as a LED driver. IRQ9, IRQ10,
IRQ11, or IRQ15 may be used as system side
DACK#, system side DREQ, and system side TC
respectively in DMA mode.
96,94,92,89,87,85,
84
123,122,121,120,
118,117,115,114,
112,110,108,107,
106,104,103,101,
100
126
105
98
119
71,73,74,75,77,79,
80,81,140,139,
137,136,134,132,
130,129
124
125
83
82
97
99
131
127
109,111,113,116,
138,95,93,90,86,
88
157,155,153,151,
149,147,146
184,183,182,181,
179,178,176,175,
173,171,169,168,
167,165,164,162,
161
187
166
159
180
134,135,136,137,
139,141,142,143,
200,199,197,196,
194,193,190,189
185
186
145
144
158
160
191
188
170,172,174,177,
198,156,154,152,
148,150
I/O*
I
I
I
I
I
I
I/O
I
I
I
I
O(OD)
O(OD)
O(TS)
O(TS)
O(TS)
PIN DESCRIPTION
1. ISA Bus Interface
*
) I : Input, O : Output, I/O : Input/Output, O (OD) : Open Drain Output, O (TS) : Tri-State Output.
*
1) Pin No. of the RB5C396 differ from those of others. Refer to “PIN CONFIGURATION”.
Drive
—
—
—
—
—
—
12mA
—
—
—
—
16mA
16mA
12mA
16mA
8mA