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TTP258 Datasheet(PDF) 21 Page - Tontek Design Technology

Part # TTP258
Description  Preliminary
PDF  44 Pages
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Manufacturer  TONTEK [Tontek Design Technology]
Direct Link  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP258 Datasheet(HTML) 21 Page - Tontek Design Technology

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Preliminary
TTP258
TonTouch
TM
16’/04/06
Page 21 of 44
Ver.: 1.2
P-3: 8 bits Timer/Counter (TCP) for TCP1
One 8-bit timer/counters (TCP) with 4 kind clock sources and preload data
buffer can implement as a timer or counter feature. The clock sources of TCP1
are selected by TCP1S0 & TCP1S1 two bits of the timer control registers
(TCP1C). TCP1OV is the timer or counter overflow signal and the rising edge
will set the relative INT flag.
TCP1C[200H]: TCP1 Timer/counter control register[R/W], default value [0000]
Register
Bit3
Bit2
Bit1
Bit0
Bit Name
TCP1LD
TCP1S1
TCP1S0
TCP1EN
Read/Write
R/W
R/W
R/W
R/W
TCP1EN: TCP1 counting enabled. (0: disable; 1: enable)
TCP1LD: TCP1 auto-reload enabled. (0: disable; 1: enable)
TCP1S1 & TCP1S0: TCP1 clock source selection bits.
TCP1S1
TCP1S0
Selected Clock source
0
0
CK0
0
1
CK1
1
0
CK2
1
1
CK3
TCP1L[201H]: TCP1 low nibble data register[R/W], default value [0000]
Register
Bit3
Bit2
Bit1
Bit0
Bit Name
TCP1_3/TCP1D3 TCP1_2/TCP1D2 TCP1_1/TCP1D1 TCP1_0/TCP1D0
Read/Write
R/W
R/W
R/W
R/W
TCP1_3~TCP1_0: reading the counter low nibble data.
TCP1D3~TCP1D0: writing TCP1D low nibble of data buffer.
TCP1H[202H]: TCP1 high nibble data register[R/W], default value [0000]
Register
Bit3
Bit2
Bit1
Bit0
Bit Name
TCP1_7/TCP1D7 TCP1_6/TCP1D6 TCP1_5/TCP1D5 TCP1_4/TCP1D4
Read/Write
R/W
R/W
R/W
R/W
TCP1_7~TCP1_4: reading the counter high nibble data.
TCP1D7~TCP1D4: writing TCP1D high nibble of data buffer.
* TCP1D: Like a 8 bit TCP1 data register[R/W], default value [00H]
TCP1D
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Bit Name TCP1D7 TCP1D6 TCP1D5 TCP1D4 TCP1D3 TCP1D2 TCP1D1 TCP1D0
The special R/W function for TCP1 has different Target, AS writing TCP1H/L
registers that are updating preload data of the TCP1D. As read TCP1H/L
registers that are the brand new TCP1 counter value.



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