INTERNAL BUS

 

 

 

 

 

 

MULTIPLEXER

 

 

 

 

 

 

SBUF (T)

 

 

TIMER/COUNTER1

 

 

 

SHIFT CLOCK

 

 

OVERFLOW

 

 

 

 

 

TX CONTROL

 

 

 

 

TIMER/COUNTER2

 

 

 

 

OVERFLOW

 

 

 

 

 

 

1/2OSC.

 

 

 

 

 

Figure 4-27Serial

 

(PCON.7) (T2CON.4)

(T2CON.5) (IOCON.5)

 

SCON

SMOD

TCLK

RCLK

SERR

100

 

 

 

 

 

 

port

 

RX CONTROL

 

 

 

 

 

 

 

 

 

Note:

 

 

 

INPUT SHIFT

 

 

 

 

 

REGISTER

: Internal bus connection

 

 

MULTIPLEXER

: Serial data flow and

 

 

 

 

SBUF (R)

 

shift clock

 

 

 

 

 

 

: Control coupling

 

 

 

TXD (P3.1)

RXD (P3.0)

MSM80C154S/83C154S/85C154HVS

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Image 107
Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual 100, RX Control Input Shift Register, Sbuf R