Fujitsu MB89202 manual Capture Data Registers H and L Tcph and Tcpl, Bit6 Bit5 Bit4 Bit3 Bit2 Bit1

CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

8.4.7Capture Data Registers H and L (TCPH and TCPL)

The capture data register H (TCPH) stores the number of events of the higher 8 bits in the 16-bit capture mode of the 8/16-bit capture timer/counter.

The capture data register L (TCPL) stores the number of events in the 8-bit capture mode of the 8/16-bit capture timer/counter or the number of events of the lower 8 bits in the 16-bit capture mode.

In the read operation in the timer/counter mode, counter values are read.

■Capture Data Registers H and L (TCPH and TCPL)

The number of events detected in the capture mode is stored in TCPH and TCPL. Data cannot be written to these registers because the registers are read-only.

Figure 8.4-8shows the bit structures of capture data registers H and L.

Figure 8.4-8 Bit Structures of Capture Data Registers H and L (TCPH and TCPL)

	Address bit7			bit6	bit5	bit4	bit3	bit2	bit1	bit0 Initial value
TCPH
	001EH										XXXXXXXXB
			R	R	R	R	R	R	R	R
TCPL
	001FH										XXXXXXXXB
			R	R	R	R	R	R	R	R
	R	: Read only
	X	: Undefined

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