TC9329FA データシートの表示（PDF） - Toshiba
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TC9329FA Datasheet PDF : 83 Pages
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Pin No. Symbol
Pin Name
Function and Operation
35
36
27, 39
37, 57
IFin1/INTR1
IFin2/IN2
VDD
GND
IF signal 1 input
/External interrupt
input
IF signal 2 input
/Input port
Power-supply pins
IF signal input pin for the IF counter to
count the IF signals of the FM and AM
bands and to detect the automatic stop
position.
The input frequency is between 0.3 to
12 MHz. A built-in input amp. and C
coupling allow operation at low-level
input.
The IF counter is a 20 bit counter with
optional gate times of 1, 4, 16 and 64
ms. 20 bits of data can be readily
stored in memory. In Manual mode,
gate On/Off or CR oscillator clock
frequency count can be performed
using an instruction.
The input pin can be programmed for
use as an input port (IN port). In this
case, the pins are CMOS input. They
can count input clocks using the IF
counter.
IFin1 also functions as an external
interrupt input pin. When interrupts are
enabled and a 13.3 to 26.7 µA pulse or
longer is input to IFin1, an interrupt is
generated and the program jumps to
address 1. Input logic or rising/falling
edge can be selected for the input
interrupt. The internal 8 bit timer clock
input can be selected as input to the
pin. When the count value reaches the
specified value, an interrupt is
generated (address 4).
Note: When a pin is set to IF input, the
input is at high impedance in PLL
Off mode or if the pins are not
used for input.
Pins to which power is applied.
Normally, VDD = 0.9~1.8 V is applied.
For the PLL, power for the prescaler in
the programmable counter block and IF
input amp can be individually
programmed. By switching to different
modes depending on the power supply
voltage and the frequency used, current
dissipation can be lowered.
Connect a stabilizing capacitor between
the VDD pin and GND (4.7 µF, 0.01 µF
typ.).
In backup state (at execution of the
CKSTP instruction), current dissipation
drops (1 µA or less) and the power
supply voltage can be reduced to 0.75
V.
If more than 0.9 V is applied when the
pin voltage is 0, the device system is
reset and the program starts from
address “0”. (Power on reset)
Note: To operate the power on reset,
the power supply should start up
in 10~100 ms.
Note: The power-on reset function can
be enabled/disabled using the AI
switch.
TC9329FA/FB
Remarks
RfIN2
VDD
VDD
GND
8
2002-02-07
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