SD60C32 Datasheet, PDF (5/13 Pages) AUK corp – CMOS SINGLE-COMPONENT 8-BIT MICROCOMPUTER

SD60C32/P SD60C52/P
RST: PIN 9 (DIP40), PIN 10 (PLCC44)
Reset input. A high on this pin for two machine cycles while the oscillator is running
resets the device. An internal pulldown resistor permits a power-on reset with
only a capacitor connected to V_CC.
ALE: PIN 30 (DIP40), PIN 33 (PLCC44)
Address latch enable output pulse for latching the low byte of the address
during accesses to external memory.
In normal operation ALE is emitted at a constant rate of 1/6 the oscillator frequency,
and may be used for external timing or clocking purposes.
Note : However, that one ALE pulse is skipped during each access to external
data memory.
This pin is also the program pulse input PROG during EPROM programming.
PSEN : PIN 29 (DIP 40), PIN 32 (PLCC44)
Program store enable is the read strobe to external program memory. When the 60C52
is executing code from external program memory, PSEN is activated twice each machine
cycle, except that two PSEN activations are skipped during each access to external
data memory. PSEN is not activated during fetches from internal program memory.
EA: PIN 31 (DIP 40), PIN 35 (PLCC44)
External access enable. EA must be strapped to V_SS in order to enable the device
to fetch code from external program memory locations starting at 0000H up to FFFFH.
If EA is strapped to V_CC the device executes from internal program memory unless
the program counter contains an address greater than 0FFFH.
XTAL1: PIN 19 (DIP 40), PIN 21 (PLCC44)
Input to the Inverting oscillator amplifier and input to the internal clock generator circuits.
XTAL2: PIN 18 (DIP 40), PIN 20 (PLCC44)
Output from the inverting oscillator amplifier
0 Crystal Oscillator
NC: PIN1, 12, 23, 34 (PLCC44)
Non connection pins.
KSI-W015-000
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