EM78911
8-bit micro-controller
• The prescaler will not be cleared by SLEP instructions, when assigned to TCC mode.
16.38KHz
Fig. 10 Block diagram of TCC WDT
VII.4 I/O Ports
The I/O registers, Port 6 ~ Port 9, are bi-directional tri-state I/O ports. Port 7 can be pulled-high internally by
software control. The I/O ports can be defined as "input" or "output" pins by the I/O control registers (IOC6 ~ IOC9 )
under program control. The I/O registers and I/O control registers are both readable and writable. The I/O interface
circuit is shown in Fig.11.
Fig. 11 The circuit of I/O port and I/O control register
16