General Description
HT82M21A is a 3D mouse controller especially designed for USB and PS/2 applications. The HT82M21A can support the USB Standard Request as well as HID Class Request version 1.1. It is compatible with Microsoft Intelli 3D PS/2 mouse. The Z-axis can support two kinds of scroller input, namely; optomechanical and mechanical. It requires minimal external components to implement 3D USB plus PS/2 optical mouse. It can be briefly described as a Holtek 8-bit MCU with an on-chip USB interface logic. The USB is specified by the Universal Serial Bus Specification V1.1.

Features
*Operating voltage: 4.4V~5.25V
*Complete Universal Serial Bus specs V1.1 compatibility
*Serial Bus Interface Engine (SIE)
*USB transceiver
*Microsoft 3D Intelli mouse and IBM PS/2 mouse compatible
*Supports three buttons (R, M, L) and Z-axis input
*Z-axis can support two kinds of scroller input (optomechanical and mechanical)
*Single chip solution especially for USB mouse function
*HALT function and wake-up feature reduce power consumption
*Plug and Play functions
*Minimal external components
*6MHz crystal oscillator for system clock
*Interface compliant with ADNS-2051, ADNS-2610 and ADNS-2620
*Pass WHQL, USB-IF and EMC testing
*18-pin DIP package

 

HT82M21A - 3-Key 3D USB+PS/2 Optical Mouse Controller

Description
The ICM7216A and ICM7216B are fully integrated Timer Counters with LED display drivers. They combine a high frequency oscillator, a decade timebase counter, an 8-decade data counter and latches, a 7-segment decoder, digit multiplexers and 8 segment and 8 digit drivers which directly drive large multiplexed LED displays. The counter inputs have a maximum frequency of 10MHz in frequency and unit counter modes and 2MHz in the other modes. Both inputs are digital inputs. In many applications, amplification and level shifting will be required to obtain proper digital signals for these inputs.
The ICM7216A and ICM7216B can function as a frequency counter, period counter, frequency ratio (fA/fB) counter, time interval counter or as a totalizing counter. The counter uses either a 10MHz or 1MHz quartz crystal timebase. For period and time interval, the 10MHz timebase gives a 0.1ms resolution. In period average and time interval average, the resolution can be in the nanosecond range. In the frequency mode, the user can select accumulation times of 0.01s, 0.1s, 1s and 10s. With a 10s accumulation time, the frequency can be displayed to a resolution of 0.1Hz in the least significant digit. There is 0.2s between measurements in all ranges.
The ICM7216D functions as a frequency counter only, as described above.
All versions of the ICM7216 incorporate leading zero blanking. Frequency is displayed in kHz. In the ICM7216A and ICM7216B, time is displayed in ms. The display is multiplexed at 500Hz with a 12.2% duty cycle for each digit.
The ICM7216A is designed for common anode displays with typical peak segment currents of 25mA. The ICM7216B and ICM7216D are designed for common cathode displays with typical peak segment currents of 12mA. In the display off mode, both digit and segment drivers are turned off, enabling the display to be used for other functions.

Features
*Functions as a Frequency Counter (DC to 10MHz)
*Four Internal Gate Times: 0.01s, 0.1s, 1s, 10s in Frequency Counter Mode
*Directly Drives Digits and Segments of Large Multiplexed LED Displays (Common Anode and Common Cathode Versions)
*Single Nominal 5V Supply Required
*Highly Stable Oscillator, Uses 1MHz or 10MHz Crystal
*Internally Generated Decimal Points, Interdigit Blanking, Leading Zero Blanking and Overflow Indication
*Display Off Mode Turns Off Display and Puts Chip Into Low Power Mode
*Hold and Reset Inputs for Additional Flexibility

ICM7216AlJl, ICM7216BlPl, ICM7216DlPl, ICM7216B, ICM7216D  

ICM7216A - 8-Digit Multi-Function Frequency Counter/Timer

GENERAL DESCRIPTION
The HSD16M64F8V/VA is a 16M x 64 bit Synchronous Dynamic RAM high density memory module. The module consists of eight CMOS 4M x 8 bit with 4banks Synchronous DRAMs in TSOP-II packages is mounted on a 120-pin, double-sided, FR-4-printed circuit board., Two 0.1uF decoupling capacitors are mounted on the printed circuit board in parallel for each SDRAM. The HSD16M64F8V/VA is a SMM (Stackable Memory Module) designed and is intended for mounting into two 60-pin connector sockets. Synchronous design allows precise cycle control with the use of system clock.
I/O transactions are possible on every clock cycle. Range of operating frequencies, programmable latencies allows the same device to be useful for a variety of high bandwidth, high performance memory system applications All module components may be powered from a single 3.3V DC power supply and all inputs and outputs are LVTTL-compatible.

FEATURES
*Part Identification
- HSD16M64F8V : Stacking Height ( T = 11.3mm )
- HSD16M64F8VA : Stacking Height ( T = 7.3mm )
*Burst mode operation
*Auto & self refresh capability (4K Cycles/64ms)
*LVTTL compatible inputs and outputs
*Single 3.3V ±0.3V power supply
*MRS cycle with address key programs
- Latency (Access from column address)
- Burst length (1, 2, 4, 8 & Full page)
- Data scramble (Sequential & Interleave)
*All inputs are sampled at the positive going edge of the system clock
*120pin-SMM type FR4-PCB design
*The used device is 16Mx8bit SRAM
*Pin assignment is compatible with
- HSD8M64F8V
- HSD32M64F8V

HSD16M64F8V-13, HSD16M64F8V-F13, HSD16M64F8V-12, HSD16M64F8V-F12, HSD16M64F8V-10, HSD16M64F8V-F10, HSD16M64F8VA-13, HSD16M64F8VA-F13, HSD16M64F8VA-12, HSD16M64F8VA-F12, HSD16M64F8VA-10, HSD16M64F8VA-F10, HSD8M64F8V, HSD32M64F8V
 

HSD16M64F8V - Synchronous DRAM Module, 128Mbyte ( 16M x 64-Bit ) SMM based on 16Mx8 4Banks, 4K Ref., 3.3V