Advanced Control Technologies Inc. 05X7-0X Manuale Utente

DSH, Datasheet 

903501205 

May 1, 2003 

Zensys A/S 

ZM1220 Z-Wave Module 

Page 11 of 15 

CONFIDENTIAL 

MCU Type 

Optimized 8-bit 8051 MCU core (4 clock cycles per instruction), See [1]. 

MCU speed 

7.376974 MHz 

Flash 

32kbyte. Programmed through the SPI interface. 

SRAM 2kbyte 
SRAM (CPU) 

128 byte 

MCU Peripherals 

10-bit ADC, UART, SPI, 8 bit timer, 2x16 bit timer one with PWM mode, 
watch dog timer, Power-on Reset/Brown-Out Detector. 

Interrupt sources 

Internal and external. 

Table 3  MCU Specifications 

Crystal 

System Clock: 7.376974 MHz, 

±8ppm@25°C,  ±8ppm@-10°C to +85°C, 

3ppm aging per year. 
Real-Time Clock: 32.768kHz 

DC/DC circuit 

3.3V

±2%, 100mA Low Drop-out Voltage Regulator 

Push button 

Tiny SMD 

Optional Peripherals 

DC/DC converter, Push button, EEPROM and RTC crystal 

Table 4  MCU external peripherals 

RF Data rate 

9.6 kbps 

RF frequency (center 
frequency) 

868.42 MHz EU ZM1220 
908.42 MHz US ZM1220 

Modulation frequency 

Center frequency 

± 20kHz 

Typical RF output power 

Optimized for (PCB antenna): 
US: FCC Part 15 
ERC 70-03 on SRD 

Typical RF receiver 
sensitivity 

-94dBm 

Range (typical) 

Indoor >30 meters line of sight, in unobstructed environment. 
Outdoor > 60 meters line of sight 

Modulation 

Frequency Shift Keying (FSK) 

Signal coding 

Manchester Encoded 

RF regulatory 

Model EU ZM1220: R&TTE Directive 1999/5/EC, EN 300 220-3/2000 
Model US ZM1220: FCC Part 15, April 16 1999 

Table 5  RF Specifications