Rainbow-electronics DS25LV02 Manual do Utilizador

1 of 17 051106 GENERAL DESCRIPTION The DS25LV02 provides data storage and serial number identification for battery packs. The low-voltage Dal

DS25LV02: Low-Voltage 1024-Bit EPROM 10 of 17 than tLOW0, slave devices on the bus begin to interpret the low period as a reset pulse, effectivel

DS25LV02: Low-Voltage 1024-Bit EPROM 11 of 17 step routine: read a bit, read the complement of the bit, then write the desired value of that bit.

DS25LV02: Low-Voltage 1024-Bit EPROM 12 of 17 Figure 6. 1-Wire Write and Read Time Slots WRITE 0 SLOT WRITE 1 SLOT tSLOT tLOW0 tSLOTtRECtLOW1VPU

DS25LV02: Low-Voltage 1024-Bit EPROM 13 of 17 Figure 7. EPROM Programming Diagram SKIP ROM CommandWrite Memory Command1-WireResetPresence PulsePr

DS25LV02: Low-Voltage 1024-Bit EPROM 14 of 17 Figure 8. Operational Flow Chart YESNOYESYESYESYESNOMASTER TxNET ADDRESSCOMMANDDS25LV02 TxPRESENCE

DS25LV02: Low-Voltage 1024-Bit EPROM 15 of 17 Figure 8. Operational Flow Chart (Continued) NOYESYESYESMASTER Tx MEMORY FUNCTION COMMANDF0h READ

DS25LV02: Low-Voltage 1024-Bit EPROM 16 of 17 Figure 8. Operational Flow Chart (Continued) C3hREAD DATA & GENERATE CRC ?NOMEMORY COMMANDS 2G

DS25LV02: Low-Voltage 1024-Bit EPROM 17 of 17 Figure 8. Operational Flow Chart (Continued) NOYESYES0Fh WRITE MEMORY ?NONOMEMORY COMMANDS 3BUS MA

DS25LV02: Low-Voltage 1024-Bit EPROM 2 of 17 ABSOLUTE MAXIMUM RATINGS Voltage Range on DQ, Relative to VSS -0.3V to +12VVoltage Range on VDD, Re

DS25LV02: Low-Voltage 1024-Bit EPROM 3 of 17 AC ELECTRICAL CHARACTERISTICS: EPROM PROGRAMMING (3.0V £ VDD £ 5.5V, TA = -30°C to +50°C.) PARAMETE

DS25LV02: Low-Voltage 1024-Bit EPROM 4 of 17 PIN DESCRIPTION PIN NAME FUNCTION 1, 3 N.C. No Connection 2 VSS Supply GND and Reference for Seri

DS25LV02: Low-Voltage 1024-Bit EPROM 5 of 17 EPROM MEMORY DATA FIELD The DS25LV02 has a linear address space for access to the EPROM data field.

DS25LV02: Low-Voltage 1024-Bit EPROM 6 of 17 WRITE MEMORY [0Fh] The Write Memory command is used to program the 1024-bit EPROM data field. Progra

DS25LV02: Low-Voltage 1024-Bit EPROM 7 of 17 be correct by the bus master, a programming pulse can be issued to program the byte position within

DS25LV02: Low-Voltage 1024-Bit EPROM 8 of 17 Table 3. EPROM Memory and Status Function Commands COMMAND HEX FUNCTION Read Memory F0 Read data

DS25LV02: Low-Voltage 1024-Bit EPROM 9 of 17 CRC GENERATION The DS25LV02 has an 8-bit CRC stored in the most significant byte of its 1-Wire net a