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SCG9910
8-BIT MICROCONTROLLER
SCG9910 Microcontroller Specification
FEATURE SUMMARY
Technology
− CMOS technology.
CPU
−
−
8-bit CPU core.
128 powerful and easy-to-use
instruction set.
Memory
− Internal ROM: 48K x 8, 16K x 8 for
program and data, 32K x 8 for data
only.
− Internal RAM: 128 x 8
− Memory is organized as 16K-byte
page.
I/O Structure
− Memory mapped I/O structure.
Oscillation Frequency
− RC Oscillator for the main system
clock up to 4MHz, instruction cycle
~0.5us.
− Subsystem clock frequency of
32.768kHz for real time timer.
Power Down
− Stop mode (Stop oscillation)
Interrupts
− 2 timer interrupts.
− 1 real time interrupt.
− 1 external event interrupt.
− 1 software interrupt.
I/O ports
− 2 8-bit programmable I/O ports.
− 1 7-bit output port.
Timer
−
−
−
2 8-bit pre-scalar auto reload timers
which can be cascaded to form one
16-bit timer.
1 real time timer.
1 watch dog timer.
Speech
−
−
−
−
ADPCM technology for voice and
sound effect.
Total speech length depends on
the data rate chosen:
11 sec for 32kbps data
12.5 sec for 28kbps data
14.6 sec for 24kbps data
Direct drive of speaker.
Dual channels supported.
Operating Voltage
− 2.4V to 5.5V.
Score Concept Semiconductor Ltd.
1
Sept 2000
