PC87435 datasheet(2/5 Pages) NSC

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Revision1.01

Features

Supports Intelligent Platform Management Interface

(IPMI) Speciﬁcation v1.5, February 21, 2001

Supports Microsoft® Advanced Power Management

(APM) Speciﬁcations Revision 1.2, February 1996

Embedded Controller Features

Processing Unit

— CompactRISC CR16B 16-bit embedded RISC pro-

cessor core

— 2 Mbytes of linear address space

Internal Memory

— 128 Kbytes of on-chip ﬂash memory

— Field upgradable by host, CR16B, parallel program-

mer interface or JTAG

— Boot block for CR16B

— Memory contents protection

— 4096 bytes of on-chip RAM

Expansion Memory (Optional in 176-pin packages)

— Three address zones for static devices, with conﬁg-

urable wait states and 8- or 16-bit-wide bus

— Up to 1 Mbyte of additional code and data

— Supports host-controlled code download and on-

board flash update

— Memory access protection

Host Interface Channels

— Three KCS host interface channels

— IRQ, SMI and SCI (PWUREQ) generation

Multi-Input Wake-Up (MIWU)

— Supports up to 32 wake-up or interrupt inputs

— Special input for system On/Off switch

— Generates wake-up event to PMC (Power Manage-

ment Control) module

— Generates interrupts to ICU module

— Provides user-selectable trigger conditions

Interrupt Control Unit (ICU)

— 31 maskable vector interrupt sources

— 26 general-purpose external interrupt inputs through

MIWU

— Enable and pending indication for each interrupt

— Non-maskable interrupt input

Authentication Function Support

— Random Number Generator (RNG)

— Full Random using temperature, voltage and system

noise.

General-Purpose I/O (GPIO)

— 84/108 port pins in 128/176 packages, respectively

— I/O pins individually conﬁgured as input or output

with optional pull-up resistors

— 27 external wake-up events

— Low-cost external GPIO expansion

Two SMBus Interface modules.

Each module:

— Is master and slave

— Detects up to three simultaneous slave addresses

— Supports polling and interrupt controlled operation

— Generates a wake-up signal on detection of a Start

Condition while in Idle mode

— Has optional internal pull-up on SDA and SCL pins

Two 16-bit Multi-Function Timer (MFT16) modules.

Each module:

— Contains two 16-bit timers

— Supports Pulse Width Modulation (PWM), Capture

and Counter modes

Universal Synchronous/Asynchronous Receiver-trans-

mitter (USART)

— A full-duplex USART channel

— Programmable baud rate

— Synchronous mode with either internal or external

clock

— 7-, 8- or 9-bit protocols

— Data transfer via Interrupt, polling

— Data double buffering with DMA support

Pulse Width Modulation (PWM) Module

— Eight outputs

— 8-bit resolution

— Common input clock prescaler

Timer and WATCHDOG

— 16-bit periodic interrupt timer with 30

µs resolution

and 5-bit prescaler for embedded controller tick and

periodic wake-up tasks

— 8-bit WATCHDOG timer

Hardware Monitoring (by ADC)

— 14 inputs, with 10-bit resolution

— Controlled by embedded controller

— System Voltage Measurement

❏

Up to eight external measurement points

❏

Four internal measurement points

— Diode-Based Temperature Measurement

❏

Software-controlled fault detection

❏

Hardware-monitored over-temperature detection

— Production time calibration using ﬂash parameters

Development Support Features

— Interface to debugger via JTAG pins

❏

ISE/ADB mode (DEV mode)

❏

On-board Debug mode

— Flash programming via JTAG

CR16B Access to Host Controlled Functions

— Enabled when host inactive

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