SPC41A1 Sunplus, SPC41A1 Datasheet - Page 3

• Manufacturer Part Number: SPC41A1
• Description: 40KB Sound Controller
• Manufacturer: Sunplus

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40KB SOUND CONTROLLER
1. GENERAL DESCRIPTION
The SPC41A1 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 128-byte working SRAM. It
includes two Timer/Counters, 16 Software Selectable I/Os, and
two 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, SPC41A1 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 SPC41A1 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)
XO
XI
controller
RISC
8-bit
Low Voltage Reset
16
IOA3-0
(I/O)
PINS
40K-byte
128-byte
SRAM
ROM
GENERAL
IOC3-0
(I/O)
I/O
Two Timers
INT control
TimeBase
8-bit D/As
(current)
IOD7-0
PORT
The Max. CPU clock
(I/O)
Two
AUD1
AUD2
3
3. FEATURES
4. APPLICATION FIELD
! Intelligent education toys
! High end toy controller
! Talking instrument controller
! General speech synthesizer
! Industrial controller
! 8-bit microprocessor
! Provides 40K-byte ROM for program and audio data
! 128-byte working SRAM
! Software-based audio processing
! Wide operating voltage: 2.4V - 3.6V @ 4.0MHz
! Supports Crystal Resonator or Rosc (with Mask option)
! 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 16 general I/Os
! Two 12-bit timer/counters
! 6 INT sources
! Key wake-up function
! Approx. 13 sec speech
! Two 8-bit current output (D/A)
! Low Voltage Reset
Ex. Pattern to voice (animal, car, color, etc.)
Max. 2µA @ 5.0V
@ 6KHz sampling rate with 4-bit ADPCM
Spelling (English or Chinese)
Math
6.0MHz @ 3.6V - 5.5V
3.6V - 5.5V @ 6.0MHz
SPC41A1
SEP. 04, 2001
Version: 1.3