884x
From Citylan
4-bit single-chip Microcomputer
Family table
| Model | ROM size | SRAM size | I/O Lines | Speed | Package |
|---|---|---|---|---|---|
| MB8841HM | 2KB (2Kx8bit) | 64B (128x4bit) | 37 | 6MHz | Category:DIP42-600mil |
| MB8841H-PSH | 2KB (2Kx8bit) | 64B (128x4bit) | 37 | 6MHz | Category:SDIP42-600mil |
| MB8842M | 2KB (2Kx8bit) | 64B (128x4bit) | 25 | 3MHz | Category:DIP28-600mil |
| MB8842-PSH | 2KB (2Kx8bit) | 64B (128x4bit) | 25 | 3MHz | Category:SDIP28-600mil |
| MB8843M | 1KB (1Kx8bit) | 32B (64x4bit) | 37 | 3MHz | Category:DIP42-600mil |
| MB8843-PSH | 1KB (1Kx8bit) | 32B (64x4bit) | 37 | 3MHz | Category:SDIP42-600mil |
| MB8844M | 1KB (1Kx8bit) | 32B (64x4bit) | 25 | 3MHz | Category:DIP28-600mil |
| MB8844-PSH | 1KB (1Kx8bit) | 32B (64x4bit) | 25 | 3MHz | Category:SDIP28-600mil |
| MB8845HM | 2KB (2Kx8bit) | 64B (128x4bit) | 37 | 6MHz | Category:QFP48-(12x12)-12x12mm |
| MB8846M | 2KB (2Kx8bit) | 64B (128x4bit) | 25 | 3MHz | Category:QFP48-(12x12)-12x12mm |
| MB8847M | 1KB (1Kx8bit) | 32B (64x4bit) | 37 | 3MHz | Category:QFP48-(12x12)-12x12mm |
| MB8848M | 1KB (1Kx8bit) | 32B (64x4bit) | 25 | 3MHz | Category:QFP48-(12x12)-12x12mm |
Pinout
MB8841H
MB8843
DIP42-600mil
+---\/---+
EX | 1 42| Vcc
X | 2 41| K3
*RESET | 3 40| K2
*IRQ | 4 39| K1
SO | 5 38| K0
SI | 6 37| R15
*SC/*TO | 7 36| R14
*TC | 8 35| R13
P0 | 9 34| R12
P1 |10 33| R11
P2 |11 32| R10
P3 |12 31| R9
O0 |13 30| R8
O1 |14 29| R7
O2 |15 28| R6
O3 |16 27| R5
O4 |17 26| R4
O5 |18 25| R3
O6 |19 24| R2
O7 |20 23| R1
Vss |21 22| R0
+--------+
MB8842
MB8844
DIP42-600mil
+---\/---+
EX | 1 28| Vcc
X | 2 27| K3
*RESET | 3 26| K2
O0 | 4 25| K1
O1 | 5 24| K0
O2 | 6 23| R10/*IRQ
O3 | 7 22| R9/*TC
O4 | 8 21| R8
O5 | 9 20| R7
O6 |10 19| R6
R7 |11 18| R5
R0 |12 17| R4
R1 |13 16| R3
Vss |14 15| R2
+--------+
MB8845H
MB8847
QFP48-(12x12)-12x12mm
+-------------------------------------------+
| 1 R5 | 13 K0 | 25 SI | 37 O3 |
| 2 R6 | 14 K1 | 26 *SC/*TO | 38 O5 |
| 3 R7 | 15 K2 | 27 *TC | 39 O6 |
| 4 R8 | 16 K3 | 28 P0 | 40 O7 |
| 5 R9 | 17 Vcc | 29 P1 | 41 NC |
| 6 R10 | 18 NC | 30 NC | 42 NC |
| 7 R11 | 19 OPEN | 31 P2 | 43 Vss |
| 8 R12 | 20 EX | 32 P3 | 44 R0 |
| 9 R13 | 21 X | 33 O0 | 45 R1 |
| 10 R14 | 22 *RESET | 34 O1 | 46 R2 |
| 11 NC | 23 *IRQ | 35 O2 | 47 R3 |
| 12 R15 | 24 SO | 36 O3 | 48 R4 |
+-------------------------------------------+
MB8846
MB8848
QFP48-(12x12)-12x12mm
+------------------------------------------+
| 1 NC | 13 NC | 25 SC | 37 NC |
| 2 R5 | 14 K2 | 26 O0 | 38 R0 |
| 3 NC | 15 NC | 27 NC | 39 NC |
| 4 R6 | 16 K3 | 28 O1 | 40 R1 |
| 5 R7 | 17 NC | 29 O2 | 41 NC |
| 6 NC | 18 Vcc | 30 NC | 42 NC |
| 7 R8 | 19 OPEN | 31 O3 | 43 Vss |
| 8 R9/*TC | 20 EX | 32 O4 | 44 R2 |
| 9 R10/*IRQ | 21 NC | 33 O5 | 45 NC |
| 10 K0 | 22 X | 34 O6 | 46 R3 |
| 11 NC | 23 NC | 35 NC | 47 NC |
| 12 K1 | 24 *RESET | 36 O7 | 48 R4 |
+------------------------------------------+
Frequency
DIP48
Set reader to FREQ, put black probe to GND, red probe to 1 and 2 to measure CPU clock
DIP42
Set reader to FREQ, put black probe to GND, red probe to 1 and 2 to measure CPU clock
QFP48 (MB8845H and MB8847 only)
Set reader to FREQ, put black probe to GND, red probe to 20 and 21 to measure CPU clock
QFP48 (MB8846 and MB8848 only)
Set reader to FREQ, put black probe to GND, red probe to 20 and 2to measure CPU clock
External links
Files
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MB884x family Datasheet
