参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 44/148页
文件大小: 1733K
代理商: PC87393F-VJG
9.0 Device Characteristics (Continued)
138
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6. Output from ACK, ERR (and PE if bit 2 of PP Confg0 Register is set to 1) is open-drain in all SPP modes, except in SPP
Compatible mode when the setup mode is ECP-based FIFO and bit 4 of the Control2 parallel port register is set to 1.
Otherwise, output from these signals is level 2. External 4.7 K
pull-up resistors should be used.
7. Output from STB, AFD, INIT, SLIN is open-drain in all SPP modes, except in SPP Compatible mode when the setup
mode is ECP-based (FIFO). Otherwise, output from these signals is level 2. External 4.7 K
pull-up resistors should be
used.
8. IOH is valid for a GPIO pin only when it is not configured as open-drain.
9.3
INTERNAL RESISTORS
9.3.1
Pull-Up Resistor
Symbol: PUnn.
9.3.2
Pull-Down Resistor
Symbol: PDnn.
Symbol
Parameter
Conditions
Min
Typical
Max
Unit
RPU
Pull-up equivalent resistance
VPIN =VDD = 3.3V
nn-30%
nn
nn+30%
K
Symbol
Parameter
Conditions
Min
Typical
Max
Unit
RPD
Pull-down equivalent resistance
VPIN =0V, VDD = 3.3V nn-30%
nn
nn+30%
K
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