IXXBB1 Fujitsu Microelectronics, Inc., IXXBB1 Datasheet - Page 10

• Manufacturer Part Number: IXXBB1
• Description: 32-bit Proprietary Microcontroller Cmos Fr60 Mb91301 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

10
MB91301 Series
MB91302A
33
34
35
36
37
38
39
Pin no.
MB91V301A
38
39
40
43
40
45
46
WR1/ (ULB) /
WR2/ (LUB) /
WR3/ (LLB) /
Pin name
SYSCLK
DQMUL
DQMLU
DQMLL
MCLKE
MCLK
P85
P86
P87
P90
P91
P92
P93
I/O circuit
type
C
C
C
J
J
J
J
External bus write strobe output. The pin has this
function when WR1 output is enabled. When WR is
used as the write strobe, this becomes the byte-
enable pin (ULB). Select signal (DQMUL) of D23 to
D16 at using of SDRAM.
General purpose input/output port. The pin has this
function when the external bus write-enable output
is disabled.
External bus write strobe output. The pin has this
function when WR2 output is enabled. When WR is
used as the write strobe, this becomes the byte-
enable pin (LUB). Select signal (DQMLU) of D08 to
D05 at using of SDRAM.
General purpose input/output port. The pin has this
function when the external bus write-enable output
is disabled.
External bus write strobe output. The pin has this
function when WR3 output is enabled. When WR is
used as the write strobe, this becomes the byte-
enable pin (LLB). Select signal (DQMLL) of D07 to
D00 at using of SDRAM.
General purpose input/output port. The pin has this
functions when the external bus write-enable output
is disabled.
System clock output. The pin has this function when
system clock output is enabled. This outputs the
same clock as the external bus operating frequency.
(Output halts in stop mode.)
General purpose input/output port. The pin has this
function when system clock output is disabled.
Clock enable signal for memory.
General purpose input/output port. The pin has this
function when clock enable output is disabled.
Memory clock output. The pin has this function
when memory clock output is enabled. This outputs
the same clock as the external bus operating
frequency. (Output halts in sleep mode.)
General purpose input/output port. The pin has this
function when memory clock output is disabled.
General purpose input/output port.
Function
(Continued)