CHAPTER 2 PIN FUNCTIONS
User’s Manual U12688EJ4V0UM00
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(13) P120 to P127 (Port 12) ··· 3-state I/O
Port 12 is an 8-bit input/output port that can be set to input or output in 1-bit units.
Besides functioning as a port, in the control mode it operates as an input/output for real-time pulse unit (RPU),
external interrupt request input and external trigger input to A/D converter.
The operation mode can be set as port or control in 1-bit units, specified by the port 12 mode control register
(PMC12).
(a) Port mode
P120 to P127 can be set to input or output in bit units by the port 12 mode register (PM12).
(b) Control mode
P120 to P127 can be set in the port/control mode in bit units by the PMC12 register.
(i)
TO150, TO151 (Timer Output) ··· output
Output the pulse signal of timer 1.
(ii) TCLR15 (Timer Clear) ··· input
This is an input pin for external clear signals for timer 1.
(iii) TI15 (Timer Input) ··· input
This is an input pin for an external counter clock for timer 1.
(iv) INTP150 to INTP153 (Interrupt Request from Peripherals) ··· input
These are input pins for external interrupt requests for timer 1.
(v) ADTRG (AD Trigger Input)··· input
This is the A/D converter external trigger input pin.
Summary of Contents for V850E/MS1 UPD703100
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