The ICM7213 is a fully integrated micropower oscillator and frequency divider with four buffered outputs suitable for interfacing with most logic families. The power supply may be either a two battery stack (Ni-cad, alkaline, etc.) or a regular power supply greater than 2V. Depending upon the state of the WIDTH, INHIBIT, and TEST inputs, using a 4.194304MHz crystal will produce a variety of output frequencies including 2048Hz, 1024Hz, 34.133Hz, 16Hz, 1Hz, and 1/ 60Hz (plus composites).
The ICM7213 utilizes a very high speed low power metal gate CMOS technology which uses 6.4V zeners between the drains and sources of each transistor and also across the supply terminals. Consequently, the ICM7213 is limited to a 6V maximum VSUPPLY, although a simple dropping network can be used to extend the VSUPPLY range well above 6V (See Figure 9).
Features
• Guaranteed 2V Operation
• Very Low Current Consumption (Typ). . . . 100µA at 3V
• All Outputs TTL Compatible
• On Chip Oscillator Feedback Resistor
• Oscillator Requires Only 3 External components: Fixed Capacitor, Trim Capacitor, and A Quartz Crystal
• Output Inhibit Function
• 4 Simultaneous Outputs: One Pulse/s, One Pulse/Min, 16Hz and Composite 1024 + 16 + 2Hz Outputs
• Test Speed-Up Provides Other Frequency Outputs
(Picture: Pinout)
