TC9325F Datasheet, PDF (10/101 Pages) Toshiba Semiconductor – Single-Chip DTS Microcontroller (DTS-20)

Pin No. Symbol
94
X_OUT2
95
X_IN2
97
X_OUT1
TC9325F
Pin Name
75 kHz crystal
oscillator pins
Function and Operation
Crystal oscillator pins.
Connect a 4.5 MHz crystal (Ci = Co =
30 pF typ.) to X_IN1 and X_OUT1 and a
75 kHz crystal (Ci = Co = 30 pF typ.)
to X_IN2 and X_OUT2.
Two different types of crystal
resonators (4.5 MHz and 75 kHz) can
be connected, or simply connect one
(4.5 MHz or 75 kHz). Note that if a 75
kHz crystal only is connected, X_IN1
must be fixed to GND level. If both 4.5
MHz and 75 kHz crystal oscillators are
connected, after a reset the CPU
operates on the 4.5 MHz crystal
oscillator clock. The clock can be
readily switched by software between
the CPU operating clock and the
peripheral clock.
Oscillation stops during execution of
the CKSTP instruction.
X_OUT2
X_IN2
X_OUT1
4.5 MHz crystal
oscillator pins
X_IN1
Remarks
ROUT2
RfXT2
V_DD
ROUT1
RfXT1
V_DD
98
XIN1
100
V_EE
LCD driver bias This is the bias voltage output pin for
voltage output pin the LCD driver.
76
96
V_DD
Pins used for supplying power.
The pins supply V_DD = 3.0 to 3.6 V.
In backup state (when execution of
41
the CKSTP instruction), current
55
72
GND
dissipation becomes low (10 µA max),
dropping the power supply voltage to
93
2.0 V.
Power supply pins
If 3.0 V or more is applied to these
pins when the voltage is 0 V, a system
39
V_DD1
reset is applied to the device and the
program starts from address 0
(power-on reset).
Note: To operate the power-on reset,
99
GND1
allow 10 to 100 ms while the
device power supply voltage
rises.
Pins used for supplying power for I/O
port 4,5.The pins supply V_DD = V_DD
56
V_DD2
Power supply pins ^{to 5.5 V.}
For I/O Port4,5
72
93
NC
No connection No connection

V_DD
GND
V_DD2
10
2002-05-14