MCS-41

Intel

D8741A
12 MHz
40 pin PDIP
MD8741A/B
12 MHz
40 pin PDIP
D8742
12 MHz
40 pin PDIP
N8042AH
12 MHz
44 pin PLCC
HP# 1820-8580
P8042AH
12 MHz
40 pin PDIP
Zenith copyright
P8742AH
12 MHz
40 pin PDIP
Zenith copyright
QD8742
12 MHz
40 pin PDIP

Fujitsu

MBL8042H
12 MHz
40 pin PDIP
MBL8742H
12 MHz
40 pin PDIP

Nec

 D8741AD
4 MHz
40 pin CERDIP
 D8041AHC
6 MHz
40 pin PDIP
 D80C42C
6 MHz
40 pin PDIP
D80C42C046
 MHz
40 pin PDIP

Mitsubishi

M5L8041A-270P
6 MHz
40 pin PDIP