CST4169A General Descriptions:
CST4169A series are 4-bits micro-controller which could play 4 channel melody or 4 channel ADPCM with PWM direct drive circuit. PWM resolution is 8/10/12 bits. They include a low cost, high performance CMOS micro-processor. The clock frequency of this up is typically 4.096/8.192 (±3%) MHz. This chip operates over a wide voltage range of 1.5V~5.5V. It contains program ROM (PROM) and data ROM (DROM) inside. The program ROM is 8K/16K words and data ROM size is 496K/480K bytes. The maximum working SRAM is (128+2) nibbles. It is provided with total 16 software programmable I/O ports, 4 output only ports and a 13 levels low voltage detector (LVD).
CST4169A Features:
* Operating voltage: 1.5V to 5.5V
* MCU Operation frequency: 4.096/8.192 MHz
* Memory Size
-Program ROM size: 8K/16K words OTP type
-Data ROM size: 496K/480K bytes OTP type
-SRAM size: 128*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.
* 16 input/output pins: Port A, Port B, Port D and Port E can be defined as input or output port bit by bit.
-PA3 is provided with 38KHz modulator
-4 output only ports: Port C.
* Support four kinds of system RESET source:
-Low voltage reset. (LVR = 1.5V)
-Power on reset.
-External reset pin (PB3 and PC3). (active low)
* Watch dog timer overflow One internal interrupt sources:
-PWM interrupt.
* WDT
-Watch dog timer, can enabled/disabled by option.
-WDT period is 0.128 second.
* Audio output:
-Support PWM mode.
-Support 8/10/12 bits.
* Support option set for pull down resistor 1M, 50K Ohm, low voltage reset…etc.
* Oscillator fuse option ±3%, temperature & voltage compensation.
* Support security option (1 bit) for read inhibition.
* Support 13-levels LVD function.
CST4169A Package:
CST4169A Block Diagram:
CST4169A The Application Circuit:
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