EM6812F2TP24B datasheet(2/81 Pages) EMMICRO

2 / 81 page

EM6812

www.emmicroelectronic.com

EM6812 at a glance

Power supply

Low power architecture

Voltage regulator for internal logic supply

External regulator capacitor

CPU

8 bit CoolRisc 816L Core

16 internal registers

4 hardware subroutine stacks

8 bit hardware multiplier

refer also to the CR816L reference manual

ROM / Flash

ROM 4096 Instructions = 11.26 Kbytes

Flash 8192 Instructions = 22.5 Kbytes

RAM

512 x 8 bit static SRAM (for 8k Instructions)

256 x 8 bit static SRAM (for < 4k Instructions)

low voltage ram data retention

Low power RAM, 12 Byte

for lowest power calculations

Dual Port RAM, 4 Byte

Data IO on port B, Control on port A

Operating modes

Active mode: CPU and peripherals are running

Standby mode: CPU halted, peripherals on

Sleep mode: no clocks, reset state

Wake Up from port A inputs

Resets

Power On Reset

Reset from watchdog timer

External Reset Input

Brown Out

Reset with Port A reset combination

Reset Flags to identify the reset source

Oscillator XTAL 32kHZ

Oscillation clock pre-divider (1 sec)

External clock low frequency input

Oscillator RC

internal RC oscillator

External clock high frequency input

Freq. Trimming register

1MHz or 10MHz Clocks

stable over temperature and voltage

Prescaler’s

2 Prescaler for RC and Xtal Oscillators

input clock software selectable

fix interval IRQ’s (RTC and others)

clock source to other peripherals

Divider capture, 8 MSB’s

Parallel In/Output Port A

8 bit wide direct input read

all functions bit-wise configurable

Input , output

debouncer

IRQ on pos. or neg. edge

Pull-up, pull-down or no pull selectable

Freq. Input for timer

Input combination reset

CMOS or NCH. Open Drain outputs

Parallel In/Output Port B

8 multipurpose I/O’s

8 bit wide direct input read

all functions bit-wise configurable

4 high current outputs

Input , output

Pull-up, pull-down or no pull selectable

CMOS or NCH. Open Drain outputs

special function: Serial Interface I/O’s, DP RAM

Serial Interface SPI

3 wire serial Interface, Sclk, Din, Dout

Timer (4 x 8 bit, or 2 x 16 bit)

8 (16) bit wide, Zero-Stop and Auto-Reload mode

External signal pulse width measurement

PWM generation

Event Counter

IRQ requests

Watchdog timer

generation of watchdog reset after time out

Interrupt

external IRQ’s from Port A, Comparator

internal IRQ’s from Timer, Prescaler

SVLD

8 levels supply voltage level check

Brown Out

On-chip Brown-Out detection, reset state

Power check at Startup

EM6812F2TP24B Datasheet(PDF) 2 Page - EM Microelectronic - MARIN SA

EM6812F2TP24B Datasheet(HTML) 2 Page - EM Microelectronic - MARIN SA

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