CHAPTER 2 PIN FUNCTIONS
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User’s Manual U14492EJ3V0UD
(10) PDL0 to PDL7 (Port DL) … I/O
Port DL is a 16-bit I/O port in which input or output can be set in 1-bit units.
Besides functioning as a port, in control mode (external expansion mode), these operate as the address/data
bus (AD0 to AD15) for when memory is expanded externally.
An operation mode of port or control mode can be selected for each bit and specified by the port DL mode
control register (PMCDL).
(a) Port mode
PDL0 to PDL15 can be set to input or output in 1-bit units using the port DL mode register (PMDL).
(b) Control mode
PDL0 to PDL15 can be used as AD0 to AD15 by using PMCDL.
(i)
AD0 to AD15 (Address/data bus) … I/O
This is a multiplexed bus for an address or data on an external access. When used for an address
(T1 state) they are 24-bit address output pins A0 to A15, and when used for data (T2, TW, T3) they
are 16-bit data I/O bus pins.
(11) TO000 to TO005 (Timer output) … Output
These pins output the pulse signal of timer 00.
(12) TO010 to TO015 (Timer output) … Output
These pins output the pulse signal of timer 01.
(13) ANI00 to ANI07, ANI10 to ANI17 (Analog input) … Input
These are analog input pins to the A/D converter.
(14) CKSEL (Clock generator operating mode select) … Input
This is the input pin that specifies the operation mode of the clock generator. Fix it so that the input level
does not change during operation.
Содержание V850E/IA1 mPD703116
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