![]() |
Electronic Components Datasheet Search |
|
87C749 Datasheet(PDF) 14 Page - NXP Semiconductors |
|
|
87C749 Datasheet(HTML) 14 Page - NXP Semiconductors |
14 / 22 page ![]() Philips Semiconductors Preliminary specification 83C749/87C749 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count 1998 Apr 23 14 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 4MHz 8MHz 12MHz 16MHz FREQ MAX ACTIVE ICC 6 TYP ACTIVE ICC 6 MAX IDLE ICC 7 TYP IDLE ICC 7 ICC mA 2 4 6 8 10 12 14 16 18 20 22 SU00308 Figure 6. ICC vs. FREQ Maximum ICC values taken at VCC = 5.5V and worst case temperature. Typical ICC values taken at VCC = 5.0V and 25°C. Notes 6 and 7 refer to AC Electrical Characteristics. |
Similar Part No. - 87C749 |
|
Similar Description - 87C749 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |