Ultra Low Power Multi I/O Microcontroller

EM MICROELECTRONIC - MARIN SA EM6604 Ultra Low Power Multi I/O Microcontroller Features • Low Power - typical 1.7µA active mode - typical 0.3µA standby mode @ 1.5V, 32kHz, 25°C • Low Voltage - 1.2 to 1.7V • buzzer - 2kHz • ROM - 1536×16bit (Mask Programmed) • RAM - 72 × 4bit (User Read/Write) • 2 clocks per instruction cycle • RISC architecture • 3 software configurable 4-bit ports • 1 input port • 1 high current output port • 1 Input or Output port - bitwise • Up to 8 outputs (2 ports) • Voltage level detection (1.25V) • Timer watchdog • 8 bit timer • Power On Reset - POR • Internal interrupt sources (timer,prescaler) • External interrupt sources (portA) Figure 1 Architecture Description The EM6604 series is an advanced single chip, mask programmed low-power low-voltage CMOS 4-bit microcontroller. It contains ROM, RAM, timer, prescaler, watchdog timer, voltage level detector and stepper motor driver capability. Its low voltage and low power operation make it the most suitable controller for battery, stand alone and mobile equipment. The EM66XX series is manufactured using EM Microelectronic’s Advanced Low Power (ALP) CMOS Process. Figure 2 Pin Configuration Typical • • • • • • • Applications sensor interfaces domestic appliances security systems detectors automotive control clocks measurement equipment 03.02 REV. D/440 Copyright  2002, EM Microelectronic-Marin SA 1 www.emmicroelectronic.com EM6604 EM6604 at a glance • Power Supply - Low Voltage, low power architecture - Switch between Vdd (output buffers supply) and VddCA (logic supply) - 1.2V ... 1.7V battery voltage - 1.7µA in active mode typ. @ 1.5V, 25°C - 0.3µA in standby mode @ 1.5V, 25°C - 32 kHz Oscillator • 4-Bit Input/Output PortC - separate input or output selection by metal mask - direct input read - Pull-up, Pull-down or none, selectable by metal mask if used as Input • RAM - 72 x 4 bit, direct addressable • Buzzer Output - separate buzzer output - 2kHz output or continuous High or Low • ROM - 1536 x 16 bit metal mask programmable • Prescaler - 15 stage system clock divider down to 1 Hz - 3 interrupt requests : 2Hz/8Hz/128Hz - Prescaler reset (from 8kHz to 1Hz) • CPU - 4 bit RISC architecture - 2 clock cycles per instruction - 72 basic instructions • 8-bit Timer - 8-bit auto-reload count-up timer - 4 timer clocks : 2Hz/8Hz/32Hz/256Hz - parallel load - interrupt request when comes to FF hex. • Main Operating Modes and Resets - Active mode (CPU is running) - Standby mode (CPU in Halt) - Initial reset on Power-On (POR) - External reset pin - Watchdog timer (time-out) reset • Supply Voltage Level Detector - Fixed level - 1.25V typical - Busy flag during measure - Active only on request to reduce power consumption • 4-Bit Input PortA - Direct input read - Interrupt request on input’s rising or falling edge, selectable by metal mask. - Pull-up, Pull-down or none, selectable by metal mask - Software test variables for conditional jumps • 4-Bit Output PortB - High-current output buffers - min. 4.5mA at 0.15V voltage drop at Vdd=1.2V - differential motor driving capability (a motor with 180=Ω between two pads of PortB is driven with at least 4.75mA • Interrupt Controller - 4 external interrupt sources from PortA - 2 internal interrupt sources, prescaler and timer - each interrupt request is individually maskable - interrupt request flag is cleared automatically on register read - general interrupt request to CPU can be disabled 03.02 REV. D/440 Copyright  2002, EM Microelectronic-Marin SA 2 www.emmicroelectronic.com EM6604 Table of Contents 1. 1.1 Operating modes ___________________5 STANDBY MODE _______________________5 Table of Figures 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. EM6604 Architecture --------------------Pin Configuration --------------------------Typical Configuration ---------------------EM6604 Mode Transition Diagram ----Reset Sources and Generation --------Port A ----------------------------------------Port B ----------------------------------------Example of using PortB for Motor driving PortC ------------------------------------------Timer ------------------------------------------Interrupt Sources and Generation -----1 1 4 5 5 8 10 10 10 12 13 2. Power Supply _______________________5 3. Reset ______________________________6 3.1 POWER-ON-RESET (POR) CIRCUIT _______________6 3.2 RESET PIN _________________________________6 3.3 WATCHDOG TIMER RESET _____________________6 3.4 CPU STATE AFTER RESET ____________________6 4. Oscillator ___________________________7 A BUILT-IN CRYSTAL OSCILLATOR CIRCUIT GENERATES THE SYSTEM OPERATING CLOCK FOR THE CPU AND PERIPHERAL CIRCUITS FROM AN EXTERNALLY CONNECTED CRYSTAL (TYP. 32.768KHZ). __________________________________7 4.1 PRESCALER ________________________________7 5. Watchdog Timer _____________________8 Table of Tables 6. Input / Output Ports ___________________8 1. 1.1 3.2 4.1 4.2 5.1 6.1 6.2 6.3 6.4 6.5 6.6 7.1 7.2 8.1 8.2 8.3 8.4 9.1 10.1 13.1 13.2 13.3 6.1 PORTA ___________________________________8 6.2 PORTA REGISTERS ___________________________9 6.3 PORTB __________________________________10 6.4 PORTB REGISTERS __________________________10 6.5 PORTC __________________________________10 6.6 PORTC REGISTER ___________________________11 7. Buzzer output ______________________11 7.1 BUZZER REGISTER __________________________12 8. Timer _____________________________12 8.1 TIMER REGISTERS ___________________________13 9. Interrupt controller __________________13 9.1 INTERNAL INTERRUPT SOURCES _________________14 9.2 EXTERNAL INTERRUPT SOURCES : SEE PORTA DESCRIPTION _________________________________14 10. Supply Voltage Level Detector ________14 11. STroBe/RESet ____________________15 12. Test at EM - Active Supply Current test _15 13. EM6604 Metal Mask Options _______16 PA0 input _______________________16 PA0 - IRQ _______________________16 WD timer________________________16 Buzzer __________________________16 15. Electrical specifications______________19 15.1 ABSOLUTE MAXIMUM RATINGS __________________19 15.2: STANDARD OPERATING CONDITIONS ____________19 15.3 HANDLING PROCEDURES _____________________19 15.4: DC CHARACTERISTICS - POWER SUPPLY PINS _____19 15.5: DC CHARACTERISTICS - INPUT/OUTPUT PINS ______20 15.6 OSCILLATOR ______________________________21 Pin Description -----------------------------StandBy Activities -------------------------Initial Value After Reset ------------------Prescaler Interrupt Source ---------- ----Prescaler control Register ------- --------Watchdog Register -------------------------Input/Output Ports Overview ------------PortA Input Status Register --------------PortA Interrupt Request Register -------PortA Interrupt Mask Register ----------PortB Output Register ---------------------PortC Input/Output Register -------------Buzzer frequency selection ---------------Buzzer Control Register ------------------Timer Clock Selection ---------------------Timer Control Register -------------------LOW Timer Load/Status Register -----HIGH Timer Load/Status Register -----Interrupt Control Register -----------------SVLD Control Register -------------------Input/Output ports option -----------------PortA interrupt edge option ------------------Watchdog timer metal option -------------- 4 5 6 7 7 7 8 9 9 9 9 10 11 11 12 12 12 13 14 14 15 15 15 16. Pad Location Diagram_______________22 17. Package and Ordering Information _____22 Dimensions of PDIP24 Package __________22 17.1 ORDERING INFORMATION _____________________24 17.2 PACKAGE MARKING _________________________24 17.3 CUSTOMER MARKING _______________________24 03.02 REV. D/440 Copyright  2002, EM Microelectronic-Marin SA 3 www.emmicroelectronic.com EM6604 Table 1. Pin Description Pin Pin Name 1 reset 2 Qout/ocs1 3 Qin/osc2 4 VddCA 5 port A, 0 6 port A, 1 7 port A, 2 8 port A, 3 9 STB/RST 10 Vss 11 port B, 0 12 port B, 1 13 port B, 2 14 port B, 3 15,16 NC 17 Vdd 18 port C, 0 19 port C, 1 20 port C, 2 21 port C, 3 22 Buzzer 23 test 24 Vss Function reset input terminal crystal terminal 1 crystal terminal 2 (input) Switched logic supply input 0 port A input 1 port A input 2 port A input 3 port A strobe/reset status output negative power supply terminal output 0 port B output 1 port B output 2 port B output 3 port B not connected positive power supply terminal input / output 0 port C input / output 1 port C input / output 2 port C input / output 3 port C buzzer output test input terminal negative power supply terminal Remarks interrupt request; tvar 1 interrupt request; tvar 2 interrupt request; tvar 3 interrupt request µC reset state + port B & C write common with pin 24 (note1) High current output High current output High current output High current output for EM test purpose only common with pin 10 (note1) Note1: It is recommended that both Vss pins (10 and 24) are connected together. Figure 3 Typical configuration 03.02 REV. D/440 Copyright  2002, EM Microelectronic-Marin SA 4 www.emmicroelectronic.com EM6604 Figure 4 Mode transition diagram 1. Operating modes The EM6604 has a low power dissipation StandBy mode. 1.1 STANDBY Mode Executing a HALT instruction puts the EM6604 into the StandBy mode. The voltage regulator, oscillator, Watchdog timer, interrupts and timer are operating. However, the CPU stops since the clock related to instruction execution stops, registers, RAM, and I/O pins retain their states prior to StandBy mode. StandBy is canceled by a RESET or an Interrupt request, if enabled. Table 1.1 shows the state of the EM6604 functions mode. Table 1.1 STANDBY activities FUNCTION Oscillator Instruction Execution Registers and Flags Interrupt Functions RAM Timer Watchdog I/O pins Supply VLD Reset pin STANDBY Active Stopped Retained Active Retained Active Active Active Stopped Active 2. Power Supply Circuit is supplied by single external power supply between