- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄255988 > BQ4285EQ-N (TEXAS INSTRUMENTS INC) 1 TIMER(S), REAL TIME CLOCK, PQCC28 PDF資料下載
參數(shù)資料
| 型號(hào)： | BQ4285EQ-N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | XO, clock |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁(yè)數(shù)： | 25/30頁(yè) |
| 文件大?。?/td> | 1497K |
| 代理商： | BQ4285EQ-N |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)當(dāng)前第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)
Functional Description
Address Map
The bq4285E/L provides 14 bytes of clock and con-
trol/status registers and 114 bytes of general nonvolatile
storage.
Figure 1 illustrates the address map for the
bq4285L.
Update Period
The update period for the bq4285E/L is one second. The
bq4285E/L updates the contents of the clock and calen-
dar locations during the update cycle at the end of each
update period (see Figure 2). The alarm flag bit may
also be set during the update cycle.
The bq4285E/L copies the local register updates into the
user buffer accessed by the host processor. Whena1is
written to the update transfer inhibit bit (UTI) in regis-
ter B, the user copy of the clock and calendar bytes re-
mains unchanged, while the local copy of the same bytes
continues to be updated every second.
The update-in-progress bit (UIP) in register A is set
tBUC time before the beginning of an update cycle (see
Figure 2). This bit is cleared and the update-complete
flag (UF) is set at the end of the update cycle.
4
Figure 1. Address Map
Figure 2. Update Period Timing and UIP
Jan. 1999 B
bq4285E/L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BU-61585G5-110W | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDSO70 |
| BU-61585G5-120L | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDSO70 |
| BU-61585G5-120Z | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDSO70 |
| BU-61585G5-130K | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDSO70 |
| BU-61585G5-130Z | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDSO70 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ4285ES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| BQ4285L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Enhanced RTC With NVRAM Control |
| BQ4285LP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Enhanced RTC With NVRAM Control |
| BQ4285LQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| BQ4285LS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。