CST1602B General Description：
The TxP16S2TM is a high performance 16-bit MCU, running up to 13MHz and provided with 128K FLASH and total 3K SRAM for high performance process of audio algorithm. It is the new generation computational kernel for Flash Speech series. It has initially aimed at the areas of speech application to demonstrate its profession. TxP16S2 furnish with a fast unit, which allows calculation instructions to be issued with access memory simultaneously during one cycle. The CST1602B is equipped with TxP16S2 and integrating input/output ports,Audio PWM, Timer and Low Voltage Reset...etc. on a chip.
Furthermore, CST1602B extend its external device connection capability such as Serial ROM/Flash. The internal memory capacity includes 128Kx16 program/data FLASH plus 3Kx16 working SRAM.
CST1602B Features：
*High-performance RISC TxP16S2 CPU
-wide working frequency and voltage 6Mhz ~13Mhz@1.8Volt ~ 5.5Volt
-Operation frequency is programmable by Software
-Built-in 3072x16 SRAM
-Embedded PC Stack Level 16
*Rich DSP function
-Hardware Circular Buffer support
-MAC Computation power : 13 MIPS (max.)
-Multi-Function Support: In MAC calculation, simultaneously access two operands from memory in one cycle
-Extend Dynamic Range: A 40-bit accumulator to ensure in 512 successive multiple+additions no overflows
*Embedded Flash 128Kx16
-Typical 1,000 erase/program cycles
-Greater than 10 years Data Retention
*Software-based audio processing technical
-Subband , ADPCM , Melody
*Support 18+2(ICE PAD can be as I/O) general purpose I/O port.
*Mono 16bit PWM
*6 IRQ include 2 external interrupt
*SPI Master interface
*Three timers: Timer1, Timer2, RTC timer
*Support Spread Spectrum clocking to reduce EMI.
*Watch dog timer (WDT)
*Low voltage reset (LVR)
*PB0, PB1, PB2, PB3 support two edge modes for wake-up function are rising and falling edge trigger.
*IR
*Low voltage detector
*Notice: VCC Decoupling Cap 10uF should be close to IC within 0.5cm.
*Notice: VCC Decoupling Cap 0.1uF should be close to IC within 0.5cm.
*CST1602A和TRSF1602B 的差異如下:
*CST1602B增加了 Ultra deep sleep 功能
*CST1602B解決了PortC2/PortC4/PortC5/PortC6/PortC7不能連接電感性元件的問題
CST1602B Application Field：
*MCU Application
*Electronic Dictionary
*Handheld Games
*Electronic Learning Aid (ELA)
*Electronics storybook
CST1602B Block Diagram：
CST1602B MAC (16-bit X 16-bit Multiplier and Accumulator)：
A 16 bit x 16 bit MAC is provided for digital signal processing. The core of MAC operation is multiply MX&MY
with 2’S complement operand and accumulation previous 40-bit MF then rounding store result in the 40-bit MR
register. The basic MAC architecture is shown as Figure 5.5.
CST1602B Application Circuit and Chip Power Circuit：
Application Circuit: Mono16-bit PWM output
Notice:
1. VCC Decoupling Cap 10uF should be close to IC within 0.5cm.
2. VCC Decoupling Cap 0.1uF should be close to IC within 0.5cm.
CST1602B Package: SOP8/SOP16/SSOP24/SOP16-2：
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