HMCS40

4-bit Microcontroller

Family table

Model	ROM	RAM	Registers	Stack Registers	I/O Lines	Part No.
HMCS42	512x10-bit	32x4-bit	4	2	22	HD38702
HMCS43	1024x10-bit	80x4-bit	6	3	32	HD38750, HD38755
HMCS43C	1024x10-bit	80x4-bit	6	3	32	HD38750
HMCS43CL	1024x10-bit	80x4-bit	6	3	32	HD38755
HMCS44	2048x10-bit	160x4-bit	8	4	32	HD38800, HD38805
HMCS44C	2048x10-bit	160x4-bit	8	4	32	HD44801
HMCS44CL	2048x10-bit	160x4-bit	8	4	32	HD44808
HMCS45	2048x10-bit	160x4-bit	6	4	44	HD44820, HD44828
HMCS45C	2048x10-bit	160x4-bit	6	4	44	HD44820
HMCS45CL	2048x10-bit	160x4-bit	6	4	44	HD44828
HMCS46	4096x10-bit	256x4-bit	8	4	32	HD44840, HD44848
HMCS46C	4096x10-bit	256x4-bit	8	4	32	HD44840
HMCS46CL	4096x10-bit	256x4-bit	8	4	32	HD44848
HMCS47	4096x10-bit	256x4-bit	6	4	44	HD44860, HD44868
HMCS47C	4096x10-bit	256x4-bit	6	4	44	HD44860
HMCS47CL	4096x10-bit	256x4-bit	6	4	44	HD44868
LCD-III	2048x10-bit	160x4-bit	6	4	32	HD44795, HD44790
LCD-IV	4096x10-bit	256x4-bit	6	4	32	HD613901

Pinout

	HMCS44
        DIP42-600mil
         +---\/---+
      D3 | 1    42| D2
      D4 | 2    41| D1
      D5 | 3    40| D0
      D6 | 4    39| R33
      D7 | 5    38| R32
      D8 | 6    37| R31
      D9 | 7    36| R30
     D10 | 8    35| R23
     D11 | 9    34| R22
     D12 |10    33| R21
     D13 |11    32| R20
     D14 |12    31| INT1
     D15 |13    30| INT0
      NC |14    29| R13
   RESET |15    28| R12
     GND |16    27| R11
    OSC1 |17    26| R10
    OSC2 |18    25| R03
    *HLT |19    24| R02
   *TEST |20    23| R01
     Vcc |21    22| R00
         +--------+

Frequency

DIP42
Set reader to FREQ, put black probe to GND, red probe to 17 and 18 to measure CPU clock

External links

HMCS40 family page on wikichip

Files

• 
  HMCS44 Datasheet