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83C752 Datasheet(PDF) 15 Page - NXP Semiconductors |
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83C752 Datasheet(HTML) 15 Page - NXP Semiconductors |
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15 / 24 page  Philips Semiconductors Product specification 83C752/87C752 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count 1998 May 01 15 AC ELECTRICAL CHARACTERISTICS Tamb = 0°C to +70°C or –40°C to +85°C, VCC = 5V ±10%, VSS = 0V4, 8 12MHz CLOCK VARIABLE CLOCK SYMBOL PARAMETER MIN MAX MIN MAX UNIT 1/tCLCL Oscillator frequency: 3.5 12 MHz 3.5 16 MHz External Clock (Figure 4) tCHCX High time 20 20 ns tCLCX Low time 20 20 ns tCLCH Rise time 20 20 ns tCHCL Fall time 20 20 ns EXPLANATION OF THE AC SYMBOLS Each timing symbol has five characters. The first character is always ‘t’ (= time). The other characters, depending on their positions, indicate the name of a signal or the logical status of that signal. The designations are: C – Clock D – Input data H – Logic level high L – Logic level low Q – Output data T – Time V – Valid X – No longer a valid logic level Z – Float tCHCL tCLCL tCLCH tCHCX VCC –0.5 0.45V 0.2 VCC + 0.9 0.2 VCC – 0.1 tCLCX SU00297 Figure 4. External Clock Drive 0.2 VCC + 0.9 0.2 VCC – 0.1 VCC –0.5 0.45V SU00307 Figure 5. AC Testing Input/Output |
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