NEC PD75402A - Manual (Page 27)

CHAPTER 2. PIN FUNCTIONS
16
2.3 PROM MODE
The PROM mode is designatable in the
µ
PD75P402 alone.
2.3.1 A0 to A14 (Address) ..... Input
A 15-bit address input pin at PROM write/verify, read. As the PROM built into the
µ
PD75P402 has 2K bytes, it is
addressed by the low-order 11 bits (A0 to A10). A11 to A14 should be fixed to the low level.
2.3.2 O0 to O7 (Data) ..... Input/Output
An 8-bit data input/output pin at PROM write/verify, read.
2.3.3 CE (Chip Enable) ..... Input
A chip enable signal input pin.
2.3.4 OE (Output Enable) ..... Input
An output enable signal input pin.
2.3.5 V PP
A high voltage application pin at PROM write/verify.
It must be connected to VSS during normal operation.
2.3.6 V
DD
A supply voltage application pin.
2.3.7 V SS
A GND potential pin.