Epson S1C33L03 manual 269

III PERIPHERAL BLOCK: PRESCALER

I/O Memory of Prescaler

Table 2.3 shows the control bits of the prescaler.

Table 2.3 Control Bits of Prescaler

Register name	Address	Bit	Name	Function				Setting				Init.	R/W	Remarks
8-bit timer 4/5	0040140	D7–2	–	reserved					–			–	–	0 when being read.
clock select	(B)	D1	P8TPCK5	8-bit timer 5 clock selection	1	θ/1				0	Divided clk.	0	R/W	θ: selected by
register		D0	P8TPCK4	8-bit timer 4 clock selection	1	θ/1				0	Divided clk.	0	R/W	Prescaler clock select
														register (0x40181)
8-bit timer 4/5	0040145	D7	P8TON5	8-bit timer 5 clock control	1	On				0	Off	0	R/W
clock control	(B)	D6	P8TS52	8-bit timer 5	1		1	1			θ/256	0	R/W	θ: selected by
register		D5	P8TS51	clock division ratio selection	1		1	0			θ/128	0	R/W	Prescaler clock select
		D4	P8TS50		1		0	1			θ/64	0	R/W	register (0x40181)
					1		0	0			θ/32
					0		1	1			θ/16			8-bit timer 5 can
					0		1	0			θ/8			generate the clock for
					0		0	1			θ/4			the serial I/F Ch.3.
					0		0	0			θ/2
		D3	P8TON4	8-bit timer 4 clock control	1	On				0	Off	0	R/W
		D2	P8TS42	8-bit timer 4	1		1	1			θ/4096	0	R/W	θ: selected by
		D1	P8TS41	clock division ratio selection	1		1	0			θ/2048	0	R/W	Prescaler clock select
		D0	P8TS40		1		0	1			θ/64	0	R/W	register (0x40181)
					1		0	0			θ/32
					0		1	1			θ/16			8-bit timer 4 can
					0		1	0			θ/8			generate the clock for
					0		0	1			θ/4			the serial I/F Ch.2.
					0		0	0			θ/2
8-bit timer	0040146	D7–4	–	reserved					–			–	–	0 when being read.
clock select	(B)	D3	P8TPCK3	8-bit timer 3 clock selection	1	θ/1				0	Divided clk.	0	R/W	θ: selected by
register		D2	P8TPCK2	8-bit timer 2 clock selection	1	θ/1				0	Divided clk.	0	R/W	Prescaler clock select
		D1	P8TPCK1	8-bit timer 1 clock selection	1	θ/1				0	Divided clk.	0	R/W	register (0x40181)
		D0	P8TPCK0	8-bit timer 0 clock selection	1	θ/1				0	Divided clk.	0	R/W
16-bit timer 0	0040147	D7–4	–	reserved					–			–	–	0 when being read.
clock control	(B)	D3	P16TON0	16-bit timer 0 clock control	1	On				0	Off	0	R/W
register		D2	P16TS02	16-bit timer 0	P16TS0[2:0]					Division ratio		0	R/W	θ: selected by
		D1	P16TS01	clock division ratio selection	1		1	1			θ/4096	0		Prescaler clock select
		D0	P16TS00		1		1	0			θ/1024	0		register (0x40181)
					1		0	1			θ/256
					1		0	0			θ/64			16-bit timer 0 can be
					0		1	1			θ/16			used as a watchdog
					0		1	0			θ/4			timer.
					0		0	1			θ/2
					0		0	0			θ/1
16-bit timer 1	0040148	D7–4	–	reserved					–			–	–	0 when being read.
clock control	(B)	D3	P16TON1	16-bit timer 1 clock control	1	On				0	Off	0	R/W
register		D2	P16TS12	16-bit timer 1	P16TS1[2:0]					Division ratio		0	R/W	θ: selected by
		D1	P16TS11	clock division ratio selection	1		1	1			θ/4096	0		Prescaler clock select
		D0	P16TS10		1		1	0			θ/1024	0		register (0x40181)
					1		0	1			θ/256
					1		0	0			θ/64
					0		1	1			θ/16
					0		1	0			θ/4
					0		0	1			θ/2
					0		0	0			θ/1
16-bit timer 2	0040149	D7–4	–	reserved					–			–	–	0 when being read.
clock control	(B)	D3	P16TON2	16-bit timer 2 clock control	1	On				0	Off	0	R/W
register		D2	P16TS22	16-bit timer 2	P16TS2[2:0]					Division ratio		0	R/W	θ: selected by
		D1	P16TS21	clock division ratio selection	1		1	1			θ/4096	0		Prescaler clock select
		D0	P16TS20		1		1	0			θ/1024	0		register (0x40181)
					1		0	1			θ/256
					1		0	0			θ/64
					0		1	1			θ/16
					0		1	0			θ/4
					0		0	1			θ/2
					0		0	0			θ/1

A-1

B-III

PSC

S1C33L03 FUNCTION PART EPSON B-III-2-3