MB86831 Datasheet, PDF (18/82 Pages) Fujitsu Component Limited. – 32-bit Embedded Controller

MB86830 Series
3. Interrupt controller (IRC) Related Pins
Symbol
Pin name
I/O
Function
IRQ15/IRL3
IRQ14/IRL2
IRQ13/IRL1
IRQ12/IRL0
IRQ11
IRQ10
IRQ9
IRQ8
INTERRUPT
REQUEST
Interrupt input pins.
When the active level set for the interrupt controller (IRC) trigger mode
is input to these pins, the request sense register of the interrupt control-
ler (IRC) holds the interrupt request. (The interrupt controller (IRC)
I evaluates priority levels and performs coding for the IRL<3:0> pin, and
notifies the CPU core of the interrupt level.)
The IRQ15 to IRQ12 signals are assigned to the IRL<3:0> pin. They
function as IRQ15 to IRQ12 when the interrupt controller (IRC) be-
comes enabled.
4. Signals for the general-purpose 16-bit timer (MB86836)
Symbol
Pin name
I/O
Function
PRSCK0
Prescaler Clock
Output0
Prescaler output pin.
O
The external clock mode is not supported, which is included in the
functions of the prescaler on the MB86942.
The pin is reset to “L”.
OUT0
Timer Output0
Timer output pin.
O
The external clock mode is not supported, which is included in the
functions of the timer on the MB86942.
The pin is reset to “L”.
Timer count operation control pin.
IN0
Timer Input0
I This pin inputs the GATE signal in MODE0 to MODE3 and the external
trigger signal in MODE4.This pin has an internal pull-down resistor.
• Pin status
Symbol
PRSCK0
OUT0
Reset
O (L)
O (L)
Bus granted
O (V)
O (V)
Note : O (L) : Output “L” level
O (V) : Circuit activated ; effective level is output
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