參數(shù)資料
型號(hào): MC908QY2ACDT
廠商: FREESCALE SEMICONDUCTOR INC
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封裝: 0.65 MM PITCH, TSSOP-16
文件頁(yè)數(shù): 145/200頁(yè)
文件大?。?/td> 2587K
代理商: MC908QY2ACDT
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Registers
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
Freescale Semiconductor
49
ADIV[1:0] — ADC10 Clock Divider Bits
ADIV1 and ADIV0 select the divide ratio used by the ADC10 to generate the internal clock ADCK.
Table 3-3 shows the available clock configurations.
ADICLK — Input Clock Select Bit
If ACLKEN is clear, ADICLK selects either the bus clock or an alternate clock source as the input clock
source to generate the internal clock ADCK. If the alternate clock source is less than the minimum
clock speed, use the internally-generated bus clock as the clock source. As long as the internal clock
ADCK, which is equal to the selected input clock divided by ADIV, is at a frequency (fADCK) between
the minimum and maximum clock speeds (considering ALPC), correct operation can be guaranteed.
1 = The internal bus clock is selected as the input clock source
0 = The alternate clock source IS SELECTED
MODE[1:0] — 10- or 8-Bit or Hardware Triggered Mode Selection
These bits select 10- or 8-bit operation. The successive approximation converter generates a result
that is rounded to 8- or 10-bit value based on the mode selection. This rounding process sets the
transfer function to transition at the midpoint between the ideal code voltages, causing a quantization
error of ± 1/2LSB.
Reset returns 8-bit mode.
00 = 8-bit, right-justified, ADSCR software triggered mode enabled
01 = 10-bit, right-justified, ADSCR software triggered mode enabled
10 = Reserved
11 = 10-bit, right-justified, hardware triggered mode enabled
ADLSMP — Long Sample Time Configuration
This bit configures the sample time of the ADC10 to either 3.5 or 23.5 ADCK clock cycles. This adjusts
the sample period to allow higher impedance inputs to be accurately sampled or to maximize
conversion speed for lower impedance inputs. Longer sample times can also be used to lower overall
power consumption in continuous conversion mode if high conversion rates are not required.
1 = Long sample time (23.5 cycles)
0 = Short sample time (3.5 cycles)
ACLKEN — Asynchronous Clock Source Enable
This bit enables the asynchronous clock source as the input clock to generate the internal clock ADCK,
and allows operation in stop mode. The asynchronous clock source will operate between 1 MHz and
2 MHz if ADLPC is clear, and between 0.5 MHz and 1 MHz if ADLPC is set.
1 = The asynchronous clock is selected as the input clock source (the clock generator is only
enabled during the conversion)
0 = ADICLK specifies the input clock source and conversions will not continue in stop mode
Table 3-3. ADC10 Clock Divide Ratio
ADIV1
ADIV0
Divide Ratio (ADIV)
Clock Rate
0
1
Input clock
÷ 1
0
1
2
Input clock
÷ 2
1
0
4
Input clock
÷ 4
1
8
Input clock
÷ 8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC908QY2ACDTE 功能描述:8位微控制器 -MCU CI 908QY4A SOG RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC908QY2ACDWE 功能描述:8位微控制器 -MCU CI 908QY4A SO RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC908QY2ACDWER 功能描述:8位微控制器 -MCU CI 908QY4A SO RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC908QY2ACFQE 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC908QY2ACPE 功能描述:8位微控制器 -MCU CI 908QY4A SOG RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT