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參數(shù)資料
| 型號(hào)： | TS68HC901CP4 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | HCMOS MULTI-FUNCTION PERIPHERAL |
| 中文描述： | HCMOS多功能外設(shè) |
| 文件頁(yè)數(shù)： | 6/42頁(yè) |
| 文件大小： | 369K |
| 代理商： | TS68HC901CP4 |
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TAO,TBO,
TCO,TDO:
Timer Outputs. Each of the four timers
has an output which can produce a
square wave. The output will change
states each timercycle ;thusone fullpe-
riod of the timer out signal is equal to two
timer cycles. TAO or TBO can be reset
(logic ”O(jiān)”) by a writeto TACR, or TBCR
respectively.
XTAL1,
XTAL2 :
Timer Clock inputs. A crystal can be
connected between XTAL1 and XTAL2,
or XTAL1 can bedriven with a TTL level
clock.Whendriving XTAL1 with aTTLle-
velclock,XTAL2 mustbeallowedtofloat.
Whenusingacrystal,external capacitors
are required. See figure 35. All chip ac-
cesses are independent of the timer
clock.
TAI,TBI: Timer A, B inputs. These inputs are
control signals for timers A and B in the
pulse width measurement mode and e-
vent count mode. These signals gene-
rate interrupts at the same priority level
asthegeneral purpose I/Ointerrupt lines
I4 and I3, respectively. I4 and I3 do not
haveinterrupt capability when the timers
areoperated inthepulsewidthmeasure-
mentmode ortheeventcountmode-un-
der these conditions I4 and I3 may only
be used for I/O. Refer to paragraph TI-
MERS for further information.
Signal Name
Power Input
Ground
Clock
Chip Select
Data Strobe
Read/Write
Data tranfer Acknowledge
Register Select Bus
Data Bus
Reset
Interrupt Request
Interrupt Acknowledge
Interrupt Enable In
Interrupt Enable Out
General Purpose I/O - Interrupt Lines
Timer Clock
Timer Inputs
Timer Outputs
Serial Input
Serial Output
Receiver Clock
Transmitter Clock
Receiver Ready
Transmitter Ready
MPX
Mnemonic
V
CC
GND
CLK
CS
DS
R/W
DTACK
RS1-RS5
D0-D7
RESET
IRQ
IACK
IEI
IEO
I0-I7
XTAL1, XTAL2
TAI, TBI
TAO, TBO, TCO, TDO
SI
SO
RC
TC
RR
TR
MPX
I/O
Input
Input
Input
Input
Input
Input
Output
Input
I/O
Input
Output
Input
Input
Output
I/O
Input
Input
Output
Input
Output
Input
Input
Output
Output
Input
Active
High
Low
N/A
Low
Low
Read-High / Write-Low
Low
N/A
N/A
Low
Low
Low
Low
Low
N/A
High
N/A
N/A
N/A
N/A
N/A
N/A
Low
Low
N/A
SIGNAL SUMMARY.
TS68HC901
6/42
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