ISSI IS31CS8973

The ISSI IS31CS8973 is a 1-Cycle 16MHz 8051 CPU 256B IRAM and 768B XRAM 32KB Flash Memory (IAP and ISP) 128 Byte Information Block 15 Interrupts with 2 priority levels 4x 16-bit Timers (T0/T1/T2/T3/T4) 1x 24-bit Timer (T5) 1x Programmable 30-bit Watch Dog Timer Up to 20 GPIO pins Low power standby in SLEEP mode # Digital Peripherals # 16-bit PCA and 6 channel of CCP modules Capture/Compare/Timer Mode 8/16-bit PWM Mode and 8-bit WPWM Mode 12 CH 8-bit PWM Controller One buzzer waveform generator One I2C Master One I2C Slave, supports two consecutive addresses One SPI Master/Slave Controllers, with 4 bytes transmit and receive FIFO One 8051 UART One full-duplex LIN-capable EUART2 16-bit baud rate register 16 bytes transmit and receive FIFO # Analog Peripherals # 12-bit monotonic SAR ADC 500KHz, 128μsec conversion time (1.8~2.4V) 4Mhz, 16usec conversion time (2.5~5.5V) Programmable Gain Amplifier Up to 16 input shared with GPIO Onchip 1.1V reference and temperature sensor 12-bit voltage output DAC 4-Channel Analog Comparator Capacitance sense touch-key controller scan up to 19 keys through shared GPIO TK1 oscillator type TK2 charge transfer type Power on reset (1.5V) and LVD/LVR (1.8V-5.5V) # Clock sources # Internal oscillator at 16MHz of +/- 2% accuracy Internal low power 32KHz oscillator # Others# Integrated break point controller and debug port through I2C slave.

Data Sheets Data Sheet 116,552 bytes Instructions Set Details 282,266 bytes

Simulated Features The following on-chip peripherals are simulated by the Keil Software µVision Debugger. 4 Clocks per Machine Cycle Clock Divider and Multiplier External Memory Stretch Cycle support Interrupts xS/2L (including external) Port 0 Port 1 Port 2 Port 3 Power save modes (Idle & Power down) Ring Oscillator Timer 0 Timer 1 Timer Rate Control Ultra High Speed (10 times faster)