参数资料
型号: PCA9698BS,118
厂商: NXP Semiconductors
文件页数: 27/48页
文件大小: 0K
描述: IC I/O EXPANDER I2C 40B 56HVQFN
产品培训模块: I²C Bus Fundamentals
特色产品: NXP - I2C Interface
标准包装: 1
接口: I²C
输入/输出数: 40
中断输出:
频率 - 时钟: 1MHz
电源电压: 2.3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 56-VFQFN 裸露焊盘
供应商设备封装: 56-HVQFN
包装: 标准包装
包括: POR
产品目录页面: 826 (CN2011-ZH PDF)
其它名称: 568-3240-6
33
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
When this clock source is selected, start-up times are determined by the SUT Fuses as shown in
Note:
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to
14CK + 4.1 ms to ensure programming mode can be entered.
8.8
External Clock
To drive the device from an external clock source, XTAL1 should be driven as shown in Figure
8-4 on page 33. To run the device on an external clock, the CKSEL Fuses must be programmed
to “0000” (see Table 8-14).
Figure 8-4.
External Clock Drive Configuration
When this clock source is selected, start-up times are determined by the SUT Fuses as shown in
Table 8-13.
Start-up Times for the 128 kHz Internal Oscillator
Power Conditions
Start-up Time from
Power-down and Power-save
Additional Delay from
Reset
SUT1..0
BOD enabled
6 CK
14CK(1)
00
Fast rising power
6 CK
14CK + 4 ms
01
Slowly rising power
6 CK
14CK + 64 ms
10
Reserved
11
Table 8-14.
Crystal Oscillator Clock Frequency
Frequency
CKSEL3..0
0 - 16 MHz
0000
Table 8-15.
Start-up Times for the External Clock Selection
Power Conditions
Start-up Time from
Power-down and Power-save
Additional Delay from
Reset (VCC = 5.0V)
SUT1..0
BOD enabled
6 CK
14CK
00
Fast rising power
6 CK
14CK + 4.1 ms
01
Slowly rising power
6 CK
14CK + 65 ms
10
Reserved
11
NC
EXTERNAL
CLOCK
SIGNAL
XTAL2
XTAL1
GND
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