CST5182A/5171A/5171S1/5086A General Descriptions：
CST5182A/5171A/5171S1/5086A series are 4-bits micro-controller which could play 4 channel melody or 4 channels ADPCM with PWM direct drive circuit. The CST series are OTP (One Time Programmable) type memory, and CSTM series are MASK type memory. PWM resolution is 8/10/12 bits.
They included a low cost, high performance CMOS micro-processor. The clock frequency of this up is typically 8.192 (±3%) MHz. This chip operates over a wide voltage range of 2.0V~5.5V. It contains program ROM (PROM) and data ROM (DROM) inside. The maximum program ROM (PROM) is 16K words and maximum data ROM (DROM) size is 544K byte. The maximum working SRAM is (256+2) nibbles. It is provided with total 16 software programmable I/O ports and 4 outputs (defined by options).
CST5182A/5171A/5171S1/5086A Features：
Operating voltage: 2.0V to 5.5V
MCU Operation frequency: 8.192MHz
Memory Size
-Program ROM size: Maximum 16K*12 bits OTP type
-Data ROM size: Maximum 544K*8 bits OTP type
-SRAM size: 256*4 bits
-User register: 2*4 bits
Wakeup function for power-down mode:
-HALT mode wakeup source: Port A, Port B, Port D and Port E can wake-up from HALT mode to NORMAL mode and executing wake-up sub-routine program.
12 input/output pins: Port A, Port B and Port D can be defined as input or output port bit by bit.
4 output pins: Port C.
4 input/output or 4 input pins defined by option: If input pins are employed, Port E is defined as input ports. If input/output pins are selected, Port E is defined as input or output port bit by bit.
Four reset condition:
-Low voltage reset.
-Power on reset.
-External reset pin. (active low)
-Watch dog timer overflow.
One internal interrupt sources:
-PWM interrupt.
WDT
-Watch dog timer, can enabled/disabled by option.
-WDT period is 256*256*16/Fsys. (WDT period is 0.13 sec for system clock=8.192MHz)
Audio output:
-Support PWM or DAC mode by option. (Only TRSP series are provided DAC function)
-Support 8/10/12 bits.
Support option set for pull down resistor 1M, 50K or 220K Ohm, reset pin (PB3 or PC3), low voltage reset…etc.
Oscillator fuse option ±3%, temperature & voltage compensation.
Support security option (1 bit) for read inhibition.
CST5182A/5171A/5171S1/5086A Package：
CST5182A/5171A/5171S1/5086A Block Diagram：
CST5182A/5171A/5171S1/5086A The Application Circuit：
DAC Selected by option
Notice:
1. Regarding recording or remote car applications, please reference application note on web site.
2. C1 : 47 uF ~ 100 uF(depends on applications), C2：0.1 uF
3. DAC Applications, please reference application note on web site.
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