MSM80C154S/83C154S/85C154HVS

execution from the next address after the stop address where CPU power down mode was activated.

Each of the quasi-bidirectional ports 1, 2, and 3 can be set independently as high impedance input ports. And the 10 kW pull-up resistance for these input ports can be isolated from the power supply (VCC), leaving only the 100 kW pull-up resistance and thereby enabling the quasi-bidirectional ports to be driven by devices with low drive capacity. Furthermore, the outputs of ports, 0, 1, 2, and 3 can be switched to floating status during CPU power down modes (PD, HPD).

Three built-in 16-bit timer/counters capable of operating in a wide range of modes enable the CPUs to be used in many different ways. And since timer/counters 0 and 1 can be operated by external clock during CPU power down modes (PD, HPD) where the oscillator is stopped, these two counters can also be used in cancelling CPU power down modes.

UART based serial communication can be executed at any baud rate by carry signal from timer/counter 1 or timer/counter 2.

If an overrun or framing error is generated during data reception, the SERR bit in the I/O control register is set. And by testing this SERR bit, the accuracy of the data can be checked quite easily to ensure correct serial communication.

As can be seen, these CPUs are equipped with a very comprehensive range of functions. Also note that EASE80C51mkII is available for use as the program development support system for these CPUs.

Equipped with the MSM85C154E dedicated evachip, EASE80C51mkII is capable of pro- gram area mapping, realtime tracing, generating breaks according to accumulator contents, and various other functions designed for accurate and efficient support of program develop- ment of these CPUs.

With this great line-up of functions and with EASE80C51mkII capable of developing programs in a very short time, MSM80C154S/MSM83C154S/MSM85C154HVS give a highly integrated high performance solution.

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Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual MSM80C154S/83C154S/85C154HVS