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參數(shù)資料
| 型號： | TMS370CX9X |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 25/54頁 |
| 文件大?。?/td> | 785K |
| 代理商： | TMS370CX9X |
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TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
25
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
timer 1 module (continued)
Simple-counter configuration for mask-ROM devices only (see Figure 10)
–
Simple counter can be configured as an event counter, pulse accumulator, or an interval timer.
16-Bit
Watchdog Counter
Reset
Prescaler
Clock
Watchdog Reset Key
WD OVRFL
TAP SEL
T1CTL1.7
WDRST.7-0
WDCNTR.15-0
T1CTL2.5
WD OVFL
INT FLAG
WD OVRFL
INT ENA
Interrupt
T1CTL2.6
Figure 10. Simple Counter
analog-to-digital converter 3 module
The analog-to-digital converter 3 module is an 8-bit, successive approximation converter with internal
sample-and-hold circuitry. The module has fifteen analog input channels – eight of the channels are multiplexed
with port E – that allow the processor to convert the voltage levels from up to fifteen different sources. The ADC3
module features include the following:
Minimum conversion time: 32.8
μ
s at 5-MHz SYSCLK
Seventeen external pins:
–
Fifteen analog input channels (AN0–AN14), eight (AN0–AN7) of which can be software configured as
digital inputs (E0–E7) if not needed as analog channels
–
AN6–AN7 can also be configured as positive input voltage reference
–
V
CC3
: ADC3 module high-voltage reference input
V
SS3
: ADC3 module low-voltage reference input
The ADDATA register, which contains the digital result of the last ADC3 conversion
–
ADC3 operations can be accomplished through either interrupt driven or polled algorithms
Six ADC3 module control registers are located in the ADC3 peripheral control register frame beginning at
address 1070h.
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