MPU3870
FEATURES o 2K bytes of mask programmable ROM memory o 64 bytes of scratch pad RAM
032 bits (4 ports) TTL patible I/O o Programmable binary timer interval timer mode pulse width measurement mode event counter mode o External Interrupt Input o Crystal, LC, RG, or external time base options o Low Power (275 m W typical)
GENERAL DESCRIPTION
The MPU3870 is a plete 8-bit microputer on a single MOS integrated circuit. The MPU3870 can execute a set of more than 70 instructions. The MPU3870 features
2K bytes of ROM, 64 bytes of scratch pad RAM, a programmable binary timer, and 32 bits of I/O.
The programmable binary timer operates by itself
PIN CONFIGURATION
XTL1 1 XTL2 2 PO-O 3 PO-1 4
J5O:2 5
PO-3 6
STROBE 7 P4-0 8 P4-1 9 P4-210 P4-311 P4-4 12 P4-513 P4-614 P4-715 PO-716 PO-617 PO-518 PO-419 GND20
40~ 39 RESET 38 EXTINT 37 P1-0
36 f51:1
35 P1-2 34 P1-3
33 P5-O
32 P5-1 31 P5-2 30 P5-3 29 P5-4 28 P5-5 27 P5-6 26 P5-7 25 PI-7 24 PI-6 23 PI-5 22 PI-4 21 TEST in the interval timer mode or in...
