Epson S1C33L03 User Manual

Table 4.1 shows the input/output pins used for the 16-bit programmable timers.

Table 4.1  I/O Pins of 16-Bit Programmable Timer

P10/EXCL0/

T8UF0/DST0

I/O I/O port / 16-bit timer 0 event counter input (I) /

8-bit timer 0 output (O) / DST0 output (Ex)

CFP10(D0)/P1 function select register(0x402D4)

CFEX1(D1)/Port function extension register(0x402DF)

P11/EXCL1/

T8UF1/DST1

I/O I/O port / 16-bit timer 1 event counter input (I) /

8-bit timer 1 output (O) / DST1 output (Ex)

CFP11(D1)/P1 function select register(0x402D4)

CFEX1(D1)/Port function extension register(0x402DF)

P12/EXCL2/

T8UF2/DST2

I/O I/O port / 16-bit timer 2 event counter input (I) /

8-bit timer 2 output (O) / DST2 output (Ex)

CFP12(D2)/P1 function select register(0x402D4)

CFEX0(D0)/Port function extension register(0x402DF)

P13/EXCL3/

T8UF3/DPCO

I/O I/O port / 16-bit timer 3 event counter input (I) /

8-bit timer 3 output (O) / DPCO output (Ex)

CFP13(D3)/P1 function select register(0x402D4)

CFEX1(D1)/Port function extension register(0x402DF)

P15/EXCL4

/#DMAEND0

I/O I/O port / 16-bit timer 4 event counter input (I) /

High-speed DMA Ch.0 end signal output (O)

CFP15(D5)/P1 function select register(0x402D4)

P16/EXCL5

/#DMAEND1

I/O I/O port / 16-bit timer 5 event counter input (I) /

High-speed DMA Ch.1 end signal output (O)

CFP16(D6)/P1 function select register(0x402D4)

P22/TM0

I/O I/O port / 16-bit timer 0 output

CFP22(D2)/P2 function select register(0x402D8)

P23/TM1

I/O I/O port / 16-bit timer 1 output

CFP23(D3)/P2 function select register(0x402D8)

P24/TM2

I/O I/O port / 16-bit timer 2 output

CFP24(D4)/P2 function select register(0x402D8)

P25/TM3

I/O I/O port / 16-bit timer 3 output

CFP25(D5)/P2 function select register(0x402D8)

P26/TM4

I/O I/O port / 16-bit timer 4 output

CFP26(D6)/P2 function select register(0x402D8)

P27/TM5

I/O I/O port / 16-bit timer 5 output

CFP27(D7)/P2 function select register(0x402D8)

(I): Input mode, (O): Output mode, (Ex): Extended function

This pin outputs a clock generated by the timer x.

When using the timer x as an event counter, input count pulses from an external source to this pin.

All clock output pins used by the 16-bit programmable timers are shared with I/O ports. At cold start, all

these pins are set for the I/O port pins P2x (function select bit CFP2x = "0"), and go into high-impedance.

When using the clock output function of the 16-bit programmable timer, select the desired timer and write "1"

to the function select bit CFP2x for the corresponding pin. At hot start, these pins retain their status before

from prior to the reset.

All event-counter input pins are also shared with I/O-ports. At cold start, the EXCL[3:0] pins are set for

debug signal output pins (function extension bit CFEX[1:0] = "1") and the EXCL[5:4] pins are set for I/O-

port pins P1[5:4] (function select bit CFP1[5:4] = "0"). When using the event counter function, select the

desired timer and write "1" to the function select bit CFP1x and write "0" to the function select bit CFEXx for

the corresponding pin.

Note that these pins are also shared with output pins for the 8-bit programmer timers, etc. When the

input/output pins are set in input mode, they function as event counter inputs. Therefore, it is necessary to set

the I/O port's I/O control bit IOC1x to "0" in advance. At cold start, these pins are set in input mode. At hot

start, they retain their status from prior to the reset.