The ICM7217AIPI+ is a 4-digit (LED) presettable Up/Down Counter contain a 4 digit, 7 segment LED display driver and a presettable comparison (predetermining) register. The counter and comparison register can be preset using either thumbwheel switches, jumpers or external digital logic. The ICM7217A (common cathode) are decade counters with a maximum count of 9999. These devices also provide multiplexed BCD outputs, a carry/borrow output allowing ICM7217s to be cascaded, a zero output which indicates when the count is equal to zero and an equal output which indicates when the count is equal to the value contained in the comparison register. The ICM7217 also has a reset input and a display latch with store input.
- Pin for pin second source
- 4-digit up/down counter
- Directly drives LED display
- Presettable counter and compare register
- Interfaces with thumbwheel switches or digital logic
- Can be cascaded
- Multiplexed BCD I/O
- Up/down, store and reset inputs
- Monolithic, low power CMOS design
时钟与计时, 传感与仪器
