Toshiba TC9314F Manual page 7

Pin No. Symbol
75 V
DD
Power supply pins
72 GND
FM broadcast signal
73 FM
IN
input
AM broadcast signal
74 AM
IN
input pin
76 RESET Reset input
Pin Name
Pin for applying the power supply.
Normally, a V
PLL operation. When PLL is stopped, a V
1.8~5.5 V is applied.
During backup (at execution of the CKSTP
instruction), voltage can be reduced to 1.2 V. If
voltage drops below 1.5 V with the CPU in
operation, the CPU is stopped to prevent CPU
malfunction (stop mode) and is restarted when the
voltage reaches 1.5 V.
The STOP F/F bit detects whether stop mode is in
effect or not, so that initialization or clock
modification may be programmed as desired.
To detect and control CPU malfunction using an
external circuit, stop mode operation can be
programmed invalid, at which time all 4 bits of the
internal test port are set to 1.
If a voltage of 0 V to 1.8 V or more is applied to
this pin, the system is reset and the program
starts from address 0 (power on reset).
Note: Due to the power on reset operation, use
the device with a supply voltage rise time of
between 10 ms and 100 ms.
A programmable counter input pin for the FM
band.
Either the 1/2
mode) or the pulse swallow method (FM
can be selected by program.
In FM mode, a 50 to 130 MHz (0.3 V
locally oscillated output (VCO output) is input.
The built-in input amplifier operates at small
amplitude with capacitors connected.
Note: In PLL off mode and when AM
set, input is pulled down.
A programmable counter input pin for the AM
band. Either the pulse swallow method (HF mode)
or the direct frequency division method can be
selected by program.
In HF mode, a 1 to 60 MHz (0.3 V
oscillated output (VCO output) is input; in LF
mode, 0.5 to 10 MHz (0.2 V
The built-in input amplifier operates at small
amplitude with capacitors connected.
Note: In PLL off mode and when FM
set, input is pulled down.
System reset signal input pin.
When a reset occurs while RESET is low, the
pin is set to high and the program starts from
address 0.
Normally, if a voltage of 0 V to 1.8 V or more is
supplied to V
reset) so use this pin fixed to high.
Function and Operation
of 2.7~5.5 V is applied during
DD
DD
pulse swallow method (FM
L
min)
p-p
input is
IN
min) locally
p-p
min).
p-p
input is
IN
, the system is reset (power on
DD
7
TC9314F
Remarks
of
H
mode)
2003-07-03