DS80CH11 データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS80CH11

System Energy Manager

Dallas Semiconductor -> Maxim Integrated 

DS80CH11

1.2 DETAILED FEATURE SUMMARY

• 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

– Ultra–low stop mode power (typ. 1 uA) and

“IDLE” mode (typ. 10 mA)

– Multiple wake–up sources from STOP including

key scan, 2–wire, host I/F, or external interrupt

– Three 16–bit 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 interrupt–driven 8–bit input port to initiate

key–scan sequence

• Input/Output:

– Total of eleven 8–bit I/O ports; all pins can be

individually programmed to serve as general

purpose digital input/output.

– Each 8–bit port supports one or more special

functions:

Port 0, 2, 3: External program / data memory

interface

Port 1, 3: UART, 2–Wire 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:

– Eight–channel, 10–bit A/D with power down

mode supports charging NiMH rechargeable

cells

– 4–channel, 8–bit PWM supports LCD brightness

and contrast control

• 2–Wire Bi–directional Serial Buses

– Master/slave multi–drop operation

– Manages on–board slaves or external I/O

devices

• Power Control

– Generates system power on reset

– Programmable power down pin states

1.3 CONVENTIONS

The following conventions are used throughout this

specification:

• “SEM” is the short form name used to indicate the

System Energy Manager.

• Signals that are active low are followed by a pound

symbol (#) or backslash (\), or are indicated with an

overbar.

• If a range of signals is described, such as SA0 through

SA10, the range is given as SA10–0, with the most–

significant digit first and the least–significant digit last,

separated by a hyphen.

• Numbers written in this specification can be written as

decimal, hexadecimal, or binary. Hexadecimal num-

bers are followed by an “H” suffix. Binary numbers are

followed by a “B” suffix. For example, decimal

27 = 1BH = 00011011B.

1.4 ADDITIONAL REFERENCES

The SEM incorporates the Dallas 8051 compatible High

Speed Micro core including the CPU and many of its

core peripherals. The operational details of these ele-

ments are contained in the Dallas High Speed Micro

User’s Guide.

011200 7/88

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