IXXBB1 Fujitsu Microelectronics, Inc., IXXBB1 Datasheet - Page 61
![no-image](/images/no-image-200.jpg)
IXXBB1
Manufacturer Part Number
IXXBB1
Description
32-bit Proprietary Microcontroller Cmos Fr60 Mb91301 Series
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet
1.IXXBB1.pdf
(135 pages)
- Current page: 61 of 135
- Download datasheet (2Mb)
MB91301 Series
Notes :
Use byte access to access ports.
The external bus function has priority for port 0 to port A when these are used as external bus pins.
Accordingly, writing to the DDR has no effect on the pin input/output setting while the pins are operating
as external bus pins. The value set in the DDR becomes meaningful when the PFR register is modified
to set the pins as general purpose ports.
In stop mode (HIZ = 0), the pull-up resistor control register setting is used.
In stop mode (HIZ = 1), the pull-up resistor control register (PCR) setting is ignored during hardware
standby.
Using pull-up resistors is prohibited when these pins are used as external bus pins. In this case, do not
write “1” to the corresponding bit in the pull-up resistor control register (PCR).
61
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