EM6605 datasheet(2/43 Pages) NSC

2 / 43 page

EM6605

EM6605 at a glance

• Power Supply

- Low Voltage, low power architecture

including internal voltage regulator

- 1.8V ... 5.5 V battery voltage

- 4.0

$LQDFWLYHPRGH

- 2.5

$LQVWDQGE\PRGH

- 0.3

$LQVOHHSPRGH

@ 1.8V, 32kHz, 25 °C

- RC oscillator from 30-300kHz

• RAM

- 96 x 4 bit, direct addressable

• ROM

- 2048 x 16 bit metal mask programmable

• CPU

- 4 bit RISC architecture

- 2 clock cycles per instruction

- 72 basic instructions

• Main Operating Modes and Resets

- Active mode

(CPU is running)

- Standby mode

(CPU in Halt)

- Sleep mode

(No clock, Reset State)

- Initial reset on Power-On (POR)

- External reset pin

- Watchdog timer (time-out) reset

- Oscillation detection watchdog reset

- Reset with input combination on PortA

(metal option)

• Supply Voltage Level Detector

- 3 software selectable levels defined by user

between 1.9V and 4.5V)

- Busy flag during measure

- Active only on request during measurement to

reduce power consumption

• 4-Bit Input PortA

- Direct input read

- Debounced or direct input selectable (reg.)

- Interrupt request on input’s rising or falling edge,

selectable by register.

- Pull-down or none, selectable by met. mask

- Software test variables for conditional jumps

- PA3 input for the event counter

- Reset with input combination on PortA

(metal option)

• 4-Bit Input/Output PortB

- separate input or output selection by register

- Pull-up, Pull-down or none, selectable by metal

mask if used as Input

- Buzzer output on PB0

• 4-Bit Input/Output PortC

- Input or Output port as a whole port

- Debounced or direct input selectable (reg.)

- Interrupt request on input’s rising or falling edge,

selectable by register.

- Pull-up, pull-down or none, selectable by

metal mask if used as input

- CMOS or N-channel open drain mode

• 4-Bit Input/Output PortD

- Input or Output port as a whole port

- Pull-up, Pull-down or none, selectable by metal

mask if used as Input

- CMOS or N-channel open drain mode

- Serial Write Buffer clock and data output

• Serial (output) Write Buffer

- max. 256 bits long clocked with

ck[15]/ck[14]/ck[12]/ck[11] = 16/8/2/1kHz

- automatic send mode

- interactive send mode : interrupt request

when buffer is empty

• RCoscillator

- RC oscillator with an external resistor for

frequency adjustment in range from

30kHz to 300kHz

- Production tolerance

±20%

- Temperature toll.

±5%, -20°C<T<70°C

• Buzzer Output

- if used output on PB0

- 3 tone buzzer - 1kHz, 2kHz, 2.66kHz @32kHz

• Prescaler

- 15 stage system clock divider down to 1 Hz

- 3 interrupt requests : 1Hz/8Hz/32Hz

- Prescaler reset ck[14]-ck[1] (from 8kHz-1Hz)

• 8-bit Timer / Event Counter

- 8-bit auto-reload count-down timer

- 6 different clocks from prescaler

- or event counter from the PA3 input

- parallel load

- interrupt request when comes to 00 hex.

• Interrupt Controller

- 4 external interrupt sources from PortA

- 3 internal interrupt sources, prescaler, timer and

Serial Write Buffer

- each interrupt request is individually maskable

- interrupt request flag is cleared automatically on

NOTE: All frequencies on this page are related to 32.7kHz typical system clock

EM6605 Fiches technique(PDF) 2 Page - National Semiconductor (TI)

EM6605 Fiches technique(HTML) 2 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Fiches technique Télécharger

Lien URL