參數(shù)資料
型號(hào)： PXAS30
廠商： NXP Semiconductors N.V.
英文描述： XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
中文描述： 的XA 16位微控制器32鉀/ 1畝檢察官辦公室/光盤(pán)/無(wú)ROM，8通道8位A / D轉(zhuǎn)換，低電壓2.7 V.5.5第五的I2C，2個(gè)UART，16 MB的地址范圍
文件頁(yè)數(shù)： 16/52頁(yè)
文件大?。?/td> 295K
代理商： PXAS30
Philips Semiconductors
XA 16-bit microcontroller
32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage (2.7 V–5.5 V),
I
2
C, 2 UARTs, 16 MB address range
Preliminary specification
XA-S3
2000 Dec 01
16
Table 3. A/D Timing Configuration for 10-bit Mode
ADCFG 3 0
ADCFG.3–0
Max. Oscillator
Frequency (MHz)
Conversion Time
Sampling
(Osc. Clocks)
Osc. Clocks
μ
sec at max. Osc.
0h (0000)
6.66
88
13.21
4
1h (0001)
8
92
9.2
6
2h (0010)
8
96
8.64
8
3h (0011)
12
116
8.7
8
4h (0100)
12
120
7.2
10
5h (0101)
12
124
6.2
12
6h (0110)
12
136
6.8
24
7h (0111)
12
128
5.77
14
8h (1000)
13
148
6.35
14
9h (1001)
13
152
5.71
16
Ah (1010)
13
156
5.2
18
Bh (1011)
13
170
5.67
32
Ch (1100)
13
160
5.0
20
Dh (1101)
16
180
5.41
20
Eh (1110)
20
204
5.57
22
Fh (1111)
20
208
5.2
24
A/D Inputs
In order to obtain accurate measurements with the A/D Converter,
the source drive must be sufficient to adequately charge the
sampling capacitor during the sampling time. Figure 4 shows the
equivalent resistance and capacitance related to the A/D inputs.
A/D timing configurations indicated in Table 1 allow for full A/D
accuracy (according to the A/D specifications) assuming a source
resistance of less than or equal to 20k
. Larger source resistances
may be accommodated by increasing the sampling time with a
different A/D timing configuration.
R
S
V
ANALOG
INPUT
C
S
C
C
TO COMPARATOR
+
AD
N
AD
N+1
Sm
N+1
Sm
N
Rm
N+1
Rm
N
Multiplexer
R
m
(multiplexer resistance)
C
S
(pin capacitance)
C
C
(sampling capacitor)
R
S
(source resistance)
=
=
=
=
3 k
maximum
10 pF maximum
2 pF maximum
Recommended less than 20k
for full specified accuracy. This allows time for the sampling
capacitor (C
C
) to fully charge while the multiplexer switch is closed. Please note that sampling
causes the analog input to present a varying load to the pin.
SU00948
Figure 4. A/D Input: Equivalent Circuit
相關(guān)PDF資料
PDF描述
PXAS33KBA XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS30KFBE XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS33KFA XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS33KFBE XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS37KFA XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PXAS30KBA 功能描述:16位微控制器 - MCU XA 16BIT 1KR/ADC/I2C ROMLESS 277Q1 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
PXAS30KBA,512 功能描述:16位微控制器 - MCU XA 16BIT 1KR/ADC/I2C RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
PXAS30KBA512 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM-16-BIT MCU
PXAS30KBBE 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XA 16-bit microcontroller 32K/1K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16MB address range
PXAS30KBBE,557 功能描述:16位微控制器 - MCU XA 16BIT 1KR/ADC/I2C ROMLESS 277Q1 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
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