Features: •High Speed 80C32 Compatible Core:
High performance 4 clocks / machine cycle (8032 = 12)
Low Power: typically 1/3 power for equivalent 8032 throughput
Maximum clock speed up to 25 MHz at 5.0V
Ultralow stop mode power (typ. 1 uA) and"IDLE" mode (typ. 10 mA)
Multiple wakeup sources from STOP including key scan, 2wire, host I/F, or external interrupt
Three 16bit timers, 1 serial port
256 byte scratchpad
256 bytes MOVX RAM
•Keyboard Control:
Replaces 8042 and key scan microcontroller
2 Parallel I/O ports for key scan outputs
One interruptdriven 8bit input port to initiate keyscan sequence
•Input/Output:
Total of eleven 8bit I/O ports; all pins can be individually programmed to serve as general purpose digital input/output.
Each 8bit port supports one or more special functions:
Port 0, 2, 3: External program / data memory interface
Port 1, 3: UART, 2Wire serial, timers, and external interrupt I/O.
Port 4, 8, 9: Key scan input / output
Port 5: A/D inputs
Port 6: PWM Outputs
Port 7: Activity monitor, LED Control
Port 10: GPIO
•Analog Input/Output:
Eightchannel, 10bit A/D with power down mode supports charging NiMH rechargeable cells
4channel, 8bit PWM supports LCD brightness and contrast control
•2Wire Bidirectional Serial Buses
Master/slave multidrop operation
Manages onboard slaves or external I/O devices
•Power Control
Generates system power on reset
Programmable power down pin statesPinout
SpecificationsVoltage on Any Pin Relative to Ground 0.3V to +6.0V
Operating Temperature 0°C to 70°C
Storage Temperature 55°C to +125°C
Soldering Temperature 260°C for 10 secondsDescriptionThe DS80CH11 System Energy Manager is a highly integrated microcontroller that provides several key features for systems including key scanning and control, battery
and power management, as well as two 2Wire serial I/O Ports. It incorporates the Dallas 8051compatible highspeed microcontroller core which has been rede-signed to eliminate wasted clock and memory cycles.Every standard 8051 instruction is executed between 1.5 and 3 times faster than the original for the same crystal speed. Looking at it another way, the highspeed core achieves the same throughput as a stan-dard 8051 while using much less power as a result of fewer required clock cycles. As a result, the firmware can easily support many tasks required by mobile sys- tems within a single component.
The controller DS80CH11 is designed to offload battery and power management tasks from the host CPU and thereby make possible an efficient solution for systems. In addi-tion to the microcontroller core, it incorporates an 8channel, 10bit A/D converter with external refer-ence so that its firmware can perform battery manage-ment tasks without burdening the host CPU. A fourchannel 8bit pulsewidth modulator allows digital control of functions such as LCD contrast and bright-ness. An 8bit port is provided for key scan inputs. A total of 88 parallel I/O pins are available for key scan-ning, system configuration, and power management control.
The DS80CH11 System Energy Manager scans a key matrix and interfaces to the host CPU via an 8042compatible port.The benefits of sophisticated power management and permanently powered functions are thereby attained without adding to the system's chip count.
Two 2wire, bidirectional serial buses are incorpo- rated to facilitate the management of slave peripheral devices on the motherboard, such as digital tempera-ture sensors and potentiometers, and to support exter-nal lowspeed I/O devices such as monitor configura-tion channels, pen tablets, and joysticks.
Because a direct interface to the Xbus is provided, the controller is not dependent on a particular core logic chip or chip set. Independent chip select inputs for the keyboard controller, power management #1, and power management #2 registers are provided.
DS80CH11 Data Sheet
