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參數(shù)資料
| 型號： | MAX1359BCTL-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC40 |
| 封裝： | 6 X 6 MM, 0.80 MM HEIGHT, MO220, TQFN-40 |
| 文件頁數(shù)： | 25/74頁 |
| 文件大小： | 1214K |
| 代理商： | MAX1359BCTL-T |
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High-Frequency Clock
An internal oscillator and a frequency-locked loop (FLL)
are used to generate a 4.9152MHz ±1% high-frequen-
cy clock. This clock and derivatives are used internally
by the ADC, analog switches, and PWM. This clock sig-
nal outputs to CLK. When the FLL is enabled, the high-
frequency clock is locked to the 32.768kHz reference. If
the FLL is disabled, the high-frequency clock is free-
running. At power-up, the CLK pin defaults to a
2.4576MHz clock output, which is compatible with most
Cs. See Figure 14 for a block diagram of the high-fre-
quency clock.
User-Programmable I/Os
The MAX1358/MAX1359/MAX1360 provide four digital
programmable I/Os (UPIO1–UPIO4). Configure UPIOs
as logic inputs or outputs using the UPIO control regis-
ter. Configure the internal pullups using the UPIO setup
register, if required. At power-up, the UPIO’s are inter-
nally pulled up to DVDD. UPIO_ outputs can be refer-
enced to DVDD or CPOUT. See the UPIO__CTRL
Register and UPIO_SPI Register sections for more
details on configuring the UPIO_ pins.
Program each UPIO1–UPIO4 as one of the following:
General-purpose input
Power-mode control
Analog switch (SPST) and SPDT control input
ADC data-ready output
General-purpose output
PWM output
Alarm output
SPI passthrough
MAX1358/MAX1359/MAX1360
16-Bit Data-Acquisition Systems with ADC, DACs,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
______________________________________________________________________________________
31
M32K
TUNE<8:0>
HFCE
FLLE
CRDY
HFCLK
1, 2, 4, 8
DIVIDER
2:1
MUX
CLK
CLKE
CKSEL<1:0>
CKSEL2
1
0
4.9152MHz HF OSCILLATOR AND FLL
4.9152MHz
32.768kHz
FREQUENCY
COMPARE
FREQ
ERROR
DIGITALLY
CONTROLLED
OSCILLATOR
FREQUENCY
INTEGRATOR
Figure 14. High-Frequency Clock and FLL Block Diagram
Figure 15. Temperature-Sensor Measurement Block Diagram
CURRENT
SOURCE
1:3
DEMUX
IVAL<1:0>
IMUX<1:0>
AIN1
AIN2
AIN1
AIN2
TEMP+
TEMP-
PROGRAMMABLE CURRENT SOURCE
TEMP SENSOR
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