Processor: 8-bit CMOS CPU: `SC-62015' / `ESR-L' Programming Language: BASIC System ROM: 256 K Bytes Memory Capacity: System Internal: 3.8k bytes approx. Fixed Variable area: 312 bytes Program/data area: 28600 bytes Stack: Total: 145 bytes (subroutine 4 bytes/stack, ) (FOR-NEXT: 21 bytes/stack ) Operators: Addition, subtraction, multiplication, division, trigonometric and inverse trigonometric functions, logarithmic and exponential functions, angle conversion, square and square root, power, sign, absolute, integer, coordinate conversion, pi, etc. Numeric Precision: 10 digits (mantissa) + 2 digits (exponent) single precision mode 20 digits (mantissa) + 2 digits (exponent) double precision mode In the CAL, MATRIX and STAT modes, onle the single- precision mode can be used. Editing featres: Cursor left and right, line up and down, character insert, character delete. Memory protection: Battery Backup Interface capability: 11 pin (for cassette interface, disk, printer, etc) Serial input/output features: Standards: start-stop transmission (asynchronous) system Half/full duplex Baud rates: 300,600,1200,2400,4800,9600 baud (bps) parity bits: Even, odd or no parity data bits: 7 or 8 bits stop bit: 1 or 2 bits connectors used: 15-pin connector (for external equipment) output signal level: CMOS level (4 to 6 volts) Interfacing signals: Inputs: RD,CS,CD Outputs: SD,RS,RR,ER Others: SG,FG,VC Display: liquid crystal display with 4 lines and 40 columns of characters. Each character is 5*7 pixels. Total pixels: 32(V)x240(H) Keys: 89 keys Alphanumeric, numeric, special symbols, and functions numeric keypad programmable function keys Power supply: for computer operation: 6.0 Vdc Type-AAA dry cell battery (R03) x 4 for memory backup: 3.0 Vdc Lithium battery (CR2016) x 1 Power consumption: 0.07W at 6.0 Vdc Approximately 70 hours of continuous operation under normal conditions (based on 10 minutes of operation or program execution and 50 minutes of display per hour at a temperature of 20 degrees C / 68 degrees F). The operating time may vary depending on usage and the type of battery used. Operating Temperature:0-40 degrees C (32-104 degrees F) Dimensions: 200(W)x100(d)x14(H)mm 7-7/8"(W)x3-15/16"(D)x9/16"(H) Weight: 250g (0.55lb) (with batteries) Accessories: hard cover, four dry batteries, one lithium batteries and operation manual Options: Plug-in RAM cards 8kb (CE-212M), 16kB (CE-2H16M) 32kB (CE-2H32M), 64kB (CE2H64M), 128kB Printer Cassette interface (CE-126P) Printer (CE-515P) Pocket disk drive (CE-140F) others
Processor Specifications: 8-bit CMOS CPU: Designation: SC-62015, Name: ESR-L Memory Space: Data: 1Mb continuous Program: 64 kbytes x 16 segments Built-in 236 byte RAM:This internal memory makes up a separate memory space from the external memory, and its address allocation is as follows: 00H to EBH: RAM ECH to FFH: Pointers, control command registers, data buffers, I/O ports, etc. Main clock: ceramic-oscillated 2.304 MHz (1.30 usec. exectute cycle) Changeable by PLA to: 1.536 MHz (1.95 usec. execute cycle) or 3.072 MHz (0.98 usec. execute cycle) Sub-clock: CR-oscillated typ. 40kHz (as a display clock and as a timer for a half), or Crystal-oscillated 32.768 kHz (used when providing a clock function) Interrupt: 7 factors: 2 timers, 2 keys, 2 UARTS, and external factor UART: Baud rate: 300 to 9600 Parity: even/odd/no Character length: 7/8 stop bit: 1/2 break out function I/O: A0 to A18: address buses CE0 to CE7: chip select output pins DIO0 to DIO7: data buses MRQ RD WR: memory control pin KO1 to KO15: key strobe output ports KI0 to KI7: key input ports E0 to E15: general I/O ports 0A HA DIS: LCD driver control pin TXD: UART data output pin RXD: UART data input pin CO: CMT data output pin CI: CMT data input pin IRQ: External interrupt input pin ON: ON key input pinThe Sharp PC-E500 was available from many SHARP dealers all around the world.
The Sharp PC-E500 was used in a research project (The development of a stereoscopic video system) conducted by me in 1990-1992.