參數(shù)資料
型號(hào)： UPD780308GF(A)-XXX-3BA
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, PLASTIC, QFP-100
文件頁(yè)數(shù)： 44/64頁(yè)
文件大?。?/td> 2786K
代理商： UPD780308GF(A)-XXX-3BA
47
CHAPTER 3
PIN FUNCTION (
PD780308 SUBSERIES)
User’s Manual U11377EJ3V0UD
3.2 Description of Pin Functions
3.2.1 P00 to P05, P07 (Port 0)
These are 7-bit I/O ports. Besides serving as I/O ports, they function as an external interrupt request input, an
external count clock input to the timer, a capture trigger signal input, and crystal connection for subsystem clock
oscillation.
The following operating modes can be specified in 1-bit units.
(1) Port mode
P00 and P07 function as input-only ports and P01 to P05 function as I/O ports.
P01 to P05 can be specified as input or output ports in 1-bit units with port mode register 0 (PM0). When
they are used as input ports, internal pull-up resistors can be used by defining pull-up resistor option register
L (PUOL).
(2) Control mode
These ports function as an external interrupt request input, an external count clock input to the timer, and crystal
connection for subsystem clock oscillation.
(a) INTP0 to INTP5
INTP0 to INTP5 are external interrupt request input pins which can specify valid edges (rising edge, falling
edge, and both rising and falling edges). INTP0 or INTP1 becomes a 16-bit timer/event counter capture
trigger signal input pin with a valid edge input.
(b) TI00
Pin for external count clock input to 16-bit timer/event counter.
(c) TI01
Pin for capture trigger signal input to capture register (CR00) of 16-bit timer/event counter.
(d) XT1
Crystal connect pin for subsystem clock oscillation.
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