Toshiba TLCS-900/H1 Series Manual page 95

Original cmos 32-bit microcontroller

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Port 4 (P40 to P47)

Port4 is an 8-bit general-purpose Output ports. In addition to functioning as a

general-purpose Output port, port4 can also function as an address bus (A0 to A7). Each

bit can be set individually for function. Setting the AM1 and AM0 pins as shown below and

resetting the device initialize port 4 to the following function pins:

P4FC Register

Function Setting after reset is released

Address bus (A0 to A7)

Figure 3.7.3 Port4

Don't use this setting