rsc-4128 ETC-unknow, rsc-4128 Datasheet - Page 19

• Manufacturer Part Number: rsc-4128
• Description: Speech Recognition Processor
• Manufacturer: ETC-unknow

Data Sheet
On-Chip ROM
The RSC-4128 includes integrated on-chip ROM. This ROM is enabled when the –XM pin is tied , or pulled high by
it’s own internal pullup resistor. This ROM space can combine both Code and Data.
ROM code Security Feature
The RSC-4128 has only one external memory enable pin (-XM), designed to prevent configuring code space for
both internal and external memory. This discourages executing external code that reads internal code via the
MOVC instruction and dumps it externally.
developer’s application code.
Oscillators
Two independent oscillators in the RSC-4128 provide a high-frequency oscillator (OSC1), and a 32 KHz time-
keeping and power-saving oscillator (OSC2). The oscillator characteristics are:
19
OSC
1
2
3.58 MHz 4X
32768 Hz N/A
FREQ
In this way, a substantial measure of security is provided for the
P/N 80-0206-R
PLL PINS
XO1
XO2
XI1
XI2
Ceramic resonator
Internal RC
SOURCES
Crystal
Crystal
LC
© 2006 Sensory Inc.
RSC-4128