HD64F3437TF16 Datasheet, PDF (41/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

Pin Functions: Table 1.3 gives a concise description of the function of each pin.
Table 1.3 Pin Functions
Pin No.
Type
FP-100B,
Symbol TFP-100B I/O Name and Function
Power
V_CC
9, 59
I
Power: Connected to the power supply.
Connect both V_CC pins to the system power
supply.
Clock
V_CCB
V_SS
XTAL
4
I
15, 70, 71, I
92
2
I
I/O buffer power supply: Power supply for
input/output buffers at pins P8₆, P9₇, and
PA₄ to PA₇.
Ground: Connected to ground (0 V).
Connect all V_SS pins to system ground (0 V).
Crystal: Connected to a crystal oscillator.
The crystal frequency should be the same
as the desired system clock frequency. If an
external clock is input at the EXTAL pin, a
reverse-phase clock should be input at the
XTAL pin.
EXTAL 3
I
External crystal: Connected to a crystal
oscillator or external clock. The frequency of
the external clock should be the same as
the desired system clock frequency. See
section 6.2, Oscillator Circuit, for examples
of connections to a crystal and external
clock.
ø
17
O System clock: Supplies the system clock to
peripheral devices.
System control RES
1
I
Reset: A low input causes the chip to reset.
RESO
100
O Reset output: Outputs a reset signal to
external devices.
STBY
8
I
Standby: A transition to the hardware
standby mode (a power-down state) occurs
when a low input is received at the STBY
pin.
Address bus
A₁₅ to A₀
60 to 67,
72 to 79
O Address bus: Address output pins.
Data bus
D₇ to D₀ 89 to 82
I/O Data bus: 8-bit bidirectional data bus.
12