www.mcu.com.cn 1 / 41 Rev. 1.0.5
CMS8S589x Datasheet
CMS8S589x Datasheet
Enhanced 1T 8051 microcontroller with flash memory
Rev. 1.0.5
Please be reminded about following CMS’s policies on intellectual property
＊Cmsemicron Limited(denoted as ‘our company’ for later use) has already applied for relative patents and entitled legal rights. Any patents
related to CMS’s MCU or other producrts is not authorized to use. Any individual, organization or company which infringes s our company’s
interlectual property rights will be forbidden and stopped by our company through any legal actions, and our company will claim the lost and
required for compensation of any damage to the company.
＊ The name of Cmsemicron Limited and logo are both trademarks of our company.
＊Our company preserve the rights to further elaborate on the improvements about products’ function, reliability and design in this manual.
However, our company is not responsible for any usage about this munal. The applications and their purposes in this manual are just for
clarification，our company does not guarantee that these applications are feasible without further improvements and changes，and our
company does not recommend any usage of the products in areas where people’s safety is endangered during accident. Our company’s
products are not authorzed to be used for life-saving or life support devices and systems.our company has the right to change or improve the
product without any notification，for latest news, please visit our website: www.mcu.com.cn
www.mcu.com.cn 2 / 41 Rev. 1.0.5
CMS8S589x Datasheet
1. Product Features
1.1 Features
◆ Compatible with MCS-51 1T instruction system
- The system clock frequency supports up to
48MHz
- The maximum machine cycle supports 1T
SYS
@
F
SYS
=16MHz
- The maximum machine cycle supports 2T
SYS
@
F
SYS
=24MHz
- The maximum machine cycle supports 3T
SYS
@
F
SYS
＝48MHz
◆ Memory
- Maximum program FLASH: 64K×8Bit
- Data FLASH: 4K×8Bit
- Maximum Data BOOT FLASH: 16K×8Bit
- General RAM: 256×8Bit
- Universal XRAM: 4K×8Bit
- Program FLASH supports partition protection
◆ 4 oscillation modes
- HSI-Internal high-speed oscillation: 48MHz
- HSE-External high-speed oscillation:
8MHz/16MHz
- LSE-External low-speed oscillation: 32.768KHz
- LSI-Internal low-speed oscillation: 125KHz
◆ Low voltage reset function（LVR）
- 1.8V/2.0V/2.5V/3.5V
◆ Low-voltage detection function（LVD）
- 2.0V/2.2V/2.4V/2.7V/3.0V/3.7V/4.0V/4.3V
◆ GPIO
- Up to 30 GPIOs
- All digital functions can be assigned to any GPIO
- Both support pull-up/down resistor function
- Both support edge (rising edge/ falling edge/ both
edge) interrupt
- Support wake-up function
◆ Interrupt source
- Support all external port interrupts
- Up to 8 timer interrupts
- Other peripheral interrupts
◆ Operating voltage range
- 2.1V～5.5V
◆ Operating temperature range
- -40℃～105℃
◆ Communication module
- Up to 1xSPI (communication rate up to 6Mb/s)
- 1xI2C (communication rate up to 400Kb/s)
- Up to 2xUART (baud rate up to 1Mb/s)
◆ Low power mode
- Idle mode（IDLE）
-
Sleep mode（STOP）
◆ Timer
- WDT timer (watchdog timer)
- Up to 5 timers:
Timer0/1，Timer2，Timer3/4
- LSE Timer (Support sleep wake function)
◆ Buzzer driver
- 50% duty cycle, frequency can be set freely
◆ Enhanced PWM
- 6 channels enhanced PWM
- 6 mutually independent cycle counters
- Support independent /complementary/
synchronous/ group mode
- Support edge alignment/center alignment
- Support complementary mode dead zone delay
function
- Support mask function and brake function
◆ High-precision 12-bit ADC
- All GPIOs (30I/Os) support AD channels
- Optional reference voltage (2.0V/2.4V/3.0V/VDD)
- Can detect internal 1.2V reference voltage
- Support hardware trigger start conversion function
- Support a set of result digital comparison function
◆
Support 96-bit unique ID number (UID)
- Each chip has an independent ID number
◆
Support two-wire serial programming and debugging