SPC41B1 Sunplus Technology Co., Ltd., SPC41B1 Datasheet - Page 3

• Manufacturer Part Number: SPC41B1
• Description: 40KB SOUND CONTROLLER
• Manufacturer: Sunplus Technology Co., Ltd.

40KB SOUND CONTROLLER
1. GENERAL DESCRIPTION
The SPC41B1 is a CPU based two-channel speech/melody
synthesizer including CMOS 8-bit microprocessor with 69
instructions, 40K-byte ROM for speech and melody data (Speech
is compressed by a 4-bit ADPCM with approx. 13 sec speech
duration @ 6KHz sampling rate) and 64-byte working SRAM. It
includes two Timer/Counters, 12 Software Selectable I/Os, and
one 8-bit current output (D/A). For audio processing, melody and
speech can be mixed into one output. It operates over a wide
voltage range of 2.4V - 5.5V and includes Low Voltage Reset
function. The Low Voltage Reset automatically resets when the
working voltage is less than 2.2V. In addition, SPC41B1 has a
Clock Stop mode for power savings. The power savings mode
saves the RAM contents, but freezes the oscillator, causing all
other chip functions to be inoperative.
frequency is 6.0MHz. It has an Instruction Cycle Rate of 2 clock
cycles (min.) - 6 clock cycles (max.). The SPC41B1 includes, not
only the latest technology, but also the full commitment and
technical support of Sunplus.
2. BLOCK DIAGRAM
© Sunplus Technology Co., Ltd.
Proprietary & Confidential
Rosc
microprocessor
OSC
CLK
IOD7-0
8-bit
(I/O)
12
40K-byte
PINS
64-byte
SRAM
ROM
Voltage
Reset
Low
GENERAL
I/O
The Max. CPU clock
PORT
Two Timers
INT control
TimeBase
IOC3-0
8-bit D/A
(current)
(I/O)
Two
AUD
3
3. FEATURES
! 8-bit microprocessor
! Provides 40K-byte ROM for program and audio data
! 64-byte working SRAM
! Software-based audio processing
! Wide operating voltage: 2.4V - 3.6V @ 4.0MHz
! Supports R
! Max. CPU clock: 4.0MHz @ 2.4V - 3.6V
! Standby mode (Clock Stop mode) for power savings.
! 500ns instruction cycle time @ 4.0MHz CPU clock
! Provides 12 general I/Os
! Two 12-bit timer/counters
! 6 INT sources
! Key wake-up function
! Approx. 13 sec speech
! One D/A output
! Low Voltage Reset
4. APPLICATION FIELD
! Intelligent education toys
! High end toy controller
! Talking instrument controller
! General speech synthesizer
! Industrial controller
Max. 2µA @ 5.0V
@ 6KHz sampling rate with 4-bit ADPCM
Ex. Pattern to voice (animal, car, color, etc.)
Spelling (English or Chinese)
Math
OSC
only
6.0MHz @ 3.6V - 5.5V
3.6V - 5.5V @ 6.0MHz
SPC41B1
SEP. 04, 2001
Version: 1.3