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Product No. Product Description Product Status
CS8953 8051 Embedded Micro-Controller with 32KB Flash ROM Production
 General Description:
CS8953 is a general purpose microcontroller with extensive peripherals that are suitable for wide range of application. The CPU is based on an enhanced 1-Cycle 8051 core that is equivalent to 10 times faster than a conventional 12-Cycle 8051. Total on-chip SRAM is 1KB for data storage. There is total 32KB of embedded flash memory that can be used as program memory and portion of this can be used as data flash. The 8051 core has built-in T0/T1/T2 timers and a 16-bit watchdog timer. Embedded in the CPU core are also two full-duplex UART ports, one I2C master controller, and up to 28 GPIO, and up to 8 external interrupts.

Flexibility in clock includes an on-chip precision oscillator that have +/-2% accuracy or a regular crystal oscillator attached off-chip when the ultra low power precision real time clock is enabled. Unused clock sources can be disabled or used as GPIO pins for best system optimization. The clock selections are also combined with flexible power management schemes, including PMM, IDLE, STOP modes to balance CPU speed and power consumption. The CPU also includes access protection for critical registers that improves the overall reliable system operations.

Other on-chip peripherals include one slave I2C controller, a Programmable Counter Array (PCA) with 6 channels of Capture/Compare/PWM modules. There is a high performance Analog to Digital Converter with 3.5usec conversion time. The ADC can be configured in various modes to meet wide range of applications.

CS8953 also provides a flexible means of flash programming that supports ISP and IAP. The protections of loss of Flash contents are implemented in hardware. There is also access restriction on critical registers and low supply voltage detection that allow CS8953 reliable operations under harsh environment. The code security is extremely secure based on sophisticated writer command and ISP command.

Intended application fields of CS8953 include Automobile AV system, Home Appliance, and other embedded applications.
 Features:
•  1-Cycle 8051 core up to 24MHz operation
-Two 16-bit Timers T0/T1
-One 16-bit ECT Timer T2
-Programmable 16-bit Watch Dog Timer
-Two full-duplex UART ports
-Up to 8 external interrupts shared with GPIO pins
-One I2C Master Controller up to 400Kbit/sec
•  One I2C Slave Controller shared with I2C Master pins
•  256B Internal SRAM and 768B XRAM
•  32KB Flash Memory
-Configured to be shared by ISP code, program code, and data flash
-Code security and content loss protection
•  Programmable Counter Array (16-bit) with 6 CCP Modules
-Capture Mode
-Compare/Timer Mode
-8-Bit PWM Mode
-8-Bit Windowed PWM Mode
•  3.68MHz Internal Oscillator +/- 2%
•  Real Time Clock (RTC) less than 2uA current consumption
•  10-bit monotonic SAR ADC
-3.5us conversion time
-0-VDD or 0-0.5VDD full scale
-4 Intrinsic Time Multiplexed Channels
-10 inputs multiplexed with GPIO pins
•  4 Analog Comparators
-Two programmable 256 steps threshold
-Input range 0V ¡V 2.5V
-Detection time less than 250nsec
•  3 2PST Analog Switches
•  Low Voltage Detection on VDD
-Programmable threshold 2.7V ~ 4.8V
-Programmable for generation of Low Voltage Interrupt or Low Voltage Reset
•  Up to 28 GPIO (CS8953R/CS8953G)
-Configurable pin functions ¡V OD/OS/LAT
-24/28 using IOSC
-22/26 using IOSC + RTC
-20/24 using RTC + XOSC
•  Power saving modes
-Normal operation: 5mA ~ 20mA
-PMM mode: 0.2mA ~ 5mA
-Idle mode: 0.2mA ~ 5mA
-Stop mode (recovered by hardware reset, or wake up by WK condition): 300uA
•  Single power supply
-3.0V ~ 5.5V
•  Commercial (0oC ~ +70oC) and Extended Temperature range (-40oC ~ +85oC)
•  CS8953R for 28-pin SSOP or CS8953G for 32-pin LQFP RoHS compliant packages

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