công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
ADM696AR bảng dữ liệu(PDF) 4 Page - Analog Devices |
|
ADM696AR bảng dữ liệu(HTML) 4 Page - Analog Devices |
4 / 12 page ADM696/ADM697 REV. 0 –4– PIN FUNCTION DESCRIPTION Pin No. Mnemonic ADM696 ADM697 Function VCC 3 3 Power Supply Input +3 V to +5 V. VBATT 1 — Backup Battery Input. Connect to Ground if a backup battery is not used. VOUT 2 — Output Voltage, VCC or VBATT is internally switched to VOUT depending on which is at the highest potential. VOUT can supply up to 100 mA to power CMOS RAM. Connect VOUT to VCC if VOUT and VBATT are not used. GND 4 5 0 V. Ground reference for all signals. RESET 15 15 Logic Output. RESET goes low whenever LLIN falls below 1.3 V or when VCC falls below the VBATT input voltage. RESET remains low for 50 ms after LLIN goes above 1.3 V, RESET also goes low for 50 ms if the watchdog timer is enabled but not serviced within its timeout period. The RESET pulse width can be adjusted as shown in Table I. WDI 11 11 Watchdog Input, WDI is a three level input. If WDI remains either high or low for longer than the watchdog timeout period, RESET pulses low and WDO goes low. The timer resets with each transition at the WDI input. The watchdog timer is disabled when WDI is left floating or is driven to midsupply. PFI 9 9 Power Fail Input. PFI is the noninverting input to the Power Fail Comparator when PFI is less than 1.3 V, PFO goes low. Connect PFI to GND or VOUT when not used. See Figure 1. PFO 10 10 Power Fail Output. PFO is the output of the Power Fail Comparator. It goes low when PFI is less than 1.3 V. The comparator is turned off and PFO goes low when VCC is below VBATT. CEIN — 13 Logic Input. The input to the CE gating circuit. Connect to GND or VOUT if not used. CEOUT — 12 Logic Output. CEOUT is a gated version of the CEIN signal. CEOUT tracks CEIN when LLIN is above 1.3 V. If LLIN is below 1.3 V, CEOUT is forced high. BATT ON 5 — Logic Output. BATT ON goes high when VOUT is internally switched to the VBATT input. It goes low when VOUT is internally switched to VCC. The output typically sinks 7 mA and can directly drive the base of an external PNP transistor to increase the output current above the 100 mA rating of VOUT. LOW LINE 6 6 Logic Output. LOW LINE goes low when LLIN falls below 1.3 V. It returns high as soon as LLIN rises above 1.3 V. RESET 16 16 Logic Output. RESET is an active high output. It is the inverse of RESET. OSC SEL 8 8 Logic Oscillator Select Input. When OSC SEL is unconnected or driven high, the internal oscillator sets the reset time delay and watchdog time-out period. When OSC SEL is low, the external oscillator input, OSC IN, is enabled. OSC SEL has a 3 µA internal pullup. See Table I and Figure 4. OSC IN 7 7 Logic Oscillator Input. When OSC SEL is low, OSC IN can be driven by an external clock to adjust both the reset delay and the watchdog time-out period. The timing can also be adjusted by connecting an external capacitor to this pin. See Table I and Figure 4. When OSC SEL is high or floating, OSC IN selects between fast and slow watchdog time-out periods. WDO 14 14 Logic Output. The Watchdog Output, WDO, goes low if WDI remains either high or low for longer than the watchdog time-out period. WDO is set high by the next transition at WDI. If WDI is unconnected or at midsupply, WDO remains high. WDO also goes high when LOW LINE goes low. NC 12 2 No Connect. It should be left open. LLIN 13 4 Voltage Sensing Input. The voltage on the low line input, LLIN, is compared with a 1.3 V reference voltage. This input is normally used to monitor the power supply voltage. The output of the comparator generates a LOW LINE output signal. It also generates a RESET/RESET output. TEST — 1 This is a special test pin using during device manufacture. It should be connected to GND. |
Số phần tương tự - ADM696AR |
|
Mô tả tương tự - ADM696AR |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất 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 |