Unused Io Pins - Fujitsu ALL FR 460 Series Application Note

MD0 MD1
0 0
1 0
1 1
Table 1: Mode pin settings for available operation modes
Note: *1) The Bootloader is only available for the Internal vector mode MD[210]=000. Hence,
the programming of external Flash via Bootloader will be not supported by external vector
mode. For this reason the MD0 pin should be connected to a test point with pull-up resistor to
jump into the Bootloader.

1.9 Unused IO Pins

Please read Chapter 3 for how to proceed with unused (not connected) pins.
An unused pin must be terminated by a pull-up / pull-down resistor externally, or by switching
on the internal pull-up or pull-down resistor before enabling the port inputs (PORTEN bit) to
avoid transverse current.
MCU-AN-300033-E-V15
FR460 Hardware Set Up
Chapter 1 Minimal System
MD2 Operation mode
Single chip
0
Internal vector mode
0 External vector mode
1 Parallel programming mode
- 8 -
Behavior of IO ports
after Reset
All IO port as HIZ
excepted SIN4,SOT4,SCLK4
and external bus interface
External bus interface is
*1)
activated
Flash programming
interface is activated
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