P1008

Features:

Memory mapped I/O
Program memory  :  8192 x 10bits
Data memory  :   512 x 4bits
Instructions
    - Various bit manipulation
    - 8-bit data operation
    - 7-bit relative branch
    - 1 byte absolute call
Instruction cycle times             
       - Main ( XI = 4.19MHz )           
         . 15.3 us ( XI/64 = 65.5KHz )         
         . 1.91 us ( XI/8 = 524.0KHz )           
         . 0.95 us ( XI/4 = 1.05MHz )
       - Sub ( XTI = 32.768KHz )  
         . 122 us ( XTI/4 = 8.19KHz )     
       - Falling edge operation
4 Register Bank 
General register  : 8 x 4-bit respectively
Accumulator
  - Bit Accumulator (CY), 4 bit Accumulator (A),
     8 bit Accumulator (XA)
 Multiple vectored interrupt source
   - External interrupt : 4
   -  Internal interrupt : 4
Watch timer
   - fast mode : 3.91 msec
   - normal mode : 0.5 sec
   - buzzer output : 1, 2, 4 KHz
 Basic interval timer
   - 8 kinds of period
   - Used stabilization wait timer to wake up Stop mode
One 8-bit timer / event counter
8-bit serial communication interface
   - External / Internal clock selection
   - Mode : Transmit `Receive
                    Receive only
                    Clock continuous
LCD controller/driver
   - selectable number of segments ;
     20/24/28/32 segment (4/8/12 lines can
     be specified as bit ports)
   - Display mode selection
      `  Static
      `  1/2 duty (1/2 bias)
      `  1/3 duty (1/2 bias)
      `  1/3 duty (1/3 bias)
      `  1/4 duty (1/3 bias)
Key scan
  - 4, 6, 8 Pins Selectable : Port 4, 5
  - Falling edge operation
64 I/O Pins
  - LCD driver output pins : 36
    . Segment ouput pins : 20
    . Segment CMOS output pins : 12
    . Common ounput pins : 4
  - CMOS input/output pins : 32
Power saving mode
  - STOP : Main clock, CPU clock stop
  - STBY : Only CPU clock stop
                Main clock operation

Application

 VTR, Camera, Rice Cooker, Telephone Blood Pressure Gauge, CD Player


Pinout




Description

The SD42C1008 is a microcomputer of the 4-bit single chip microcomputer SD42xx series which can match an 8-bit microcomputer in the data processing capability. The SD42C1008 can handle 1-bit, 4-bit, and 8-bit data as well as operates at high speed (minimum instruction   execution time : 0.95us) it contains a LCD pannel controller/driver.