Motore di ricerca datesheet componenti elettronici |
|
ADM1032 Scheda tecnica(PDF) 9 Page - ON Semiconductor |
|
ADM1032 Scheda tecnica(HTML) 9 Page - ON Semiconductor |
9 / 18 page ADM1032 http://onsemi.com 9 outside the programmed limits. THERM output does not need to be reset, unlike the ALERT output. Once the measurements are within the limits, the corresponding status register bits are reset and the THERM output goes high. Table 8. STATUS REGISTER BIT ASSIGNMENTS Bit Name Function 7 BUSY 1 When ADC Converting 6 LHIGH (Note 1) 1 When Local High Temp Limit Tripped 5 LLOW (Note 1) 1 When Local Low Temp Limit Tripped 4 RHIGH (Note 1) 1 When Remote High Temp Limit Tripped 3 RLOW (Note 1) 1 When Remote Low Temp Limit Tripped 2 OPEN (Note 1) 1 When Remote Sensor Open-Circuit 1 RTHRM 1 When Remote THERM Limit Tripped 0 LTHRM1 1 When Local THERM Limit Tripped 1. These flags stay high until the status register is read, or they are reset by POR. Configuration Register Two bits of the configuration register are used. If Bit 6 is 0, which is the power-on default, the device is in operating mode with the ADC converting. If Bit 6 is set to 1, the device is in standby mode and the ADC does not convert. The SMBus does, however, remain active in standby mode so values can be read from or written to the SMBus. The ALERT and THERM O/Ps are also active in standby mode. Bit 7 of the configuration register is used to mask the alert output. If Bit 7 is 0, which is the power-on default, the output is enabled. If Bit 7 is set to 1, the output is disabled. Table 9. CONFIGURATION REGISTER BIT ASSIGNMENTS Bit Name Function Power-On Default 7 MASK1 0 = ALERT Enabled 1 = ALERT Masked 0 6 RUN/STOP 0 = Run 1 = Standby 0 5 to 0 Reserved 0 Conversion Rate Register The lowest four bits of this register are used to program the conversion rate by dividing the internal oscillator clock by 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024 to give conversion times from 15.5 ms (Code 0Ah) to 16 seconds (Code 00h). This register can be written to and read back over the SMBus. The higher four bits of this register are unused and must be set to 0. Use of slower conversion times greatly reduces the device power consumption, as shown in Table 10. Table 10. CONVERSION RATE REGISTER CODES Data Conversion/Sec Average Supply Current mA Typ at VDD = 5.5 V 00h 0.0625 0.17 01h 0.125 0.20 02h 0.25 0.21 03h 0.5 0.24 04h 1 0.29 05h 2 0.40 06h 4 0.61 07h 8 1.1 08h 16 1.9 09h 32 0.73 0Ah 64 1.23 0B to FFh Reserved Limit Registers The ADM1032 has nine limit registers to store local and remote, high, low, and THERM temperature limits. These registers can be written to and read back over the SMBus. The high limit registers perform a > comparison, while the low limit registers perform a < or = to comparison. For example, if the high limit register is programmed with 80C, measuring 81C results in an alarm condition. If the low limit register is programmed with 0C, measuring 0C or lower results in an alarm condition. Exceeding either the local or remote THERM limit asserts THERM low. A default hysteresis value of 10C is provided, which applies to both channels. This hysteresis can be reprogrammed to any value after powerup (Reg 0x21h). One-Shot Register The one-shot register is used to initiate a single conversion and comparison cycle when the ADM1032 is in standby mode, after which the device returns to standby. This is not a data register as such, and it is the write operation that causes the one-shot conversion. The data written to this address is irrelevant and is not stored. The conversion time on a single shot is 96 ms when the conversion rate is 16 conversions per second or less. At 32 conversions per second, the conversion time is 15.3 ms. This is because averaging is disabled at the faster conversion rates (32 and 64 conversions per second). Consecutive ALERT Register This value written to this register determines how many out-of limit measurements must occur before an ALERT is generated. The default value is that one out-of-limit measurement generates an ALERT. The maximum value that can be chosen is four. The purpose of this register is to allow the user to perform some filtering of the output. This is particularly useful at the faster two conversion rates where no averaging takes place. |
Codice articolo simile - ADM1032_12 |
|
Descrizione simile - ADM1032_12 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |