GMS90X5XC Series | HYUNDAI MicroElectronics |
AC Characteristics for GMS90X5XC series (24MHz version)
VCC= 5V + 10%, −15%; VSS= 0V; TA= 0°C to 70°C
(CL for port 0. ALE and PSEN outputs = 100pF; CL for all other outputs = 80pF)
External Program Memory Characteristics
|
|
|
|
|
|
|
|
|
|
|
|
| 24 MHz Oscillator | Variable Oscillator |
| ||
|
|
| Parameter | Symbol | 1/tCLCL = 3.5 to 24MHz | Unit | |||||||||||
|
|
|
|
| |||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| Min. | Max. | Min. | Max. |
|
|
|
|
|
|
|
|
| ||||||||||
| ALE pulse width | tLHLL | 43 | - | - | ns | |||||||||||
| Address setup to ALE | tAVLL | 17 | - | - | ns | |||||||||||
| Address hold after ALE | tLLAX | 17 | - | - | ns | |||||||||||
|
|
|
|
|
|
|
| ||||||||||
| ALE low to valid instruction in | tLLIV | - | 80 | - | ns | |||||||||||
| ALE to |
|
|
|
|
|
|
|
|
| tLLPL | 22 | - | - | ns | ||
| PSEN |
|
|
|
|
|
|
|
| ||||||||
|
| pulse width | tPLPH | 95 | - | - | ns | ||||||||||
| PSEN | ||||||||||||||||
|
| to valid instruction in | tPLIV | - | 60 | - | ns | ||||||||||
| PSEN | ||||||||||||||||
| Input instruction hold after |
|
| tPXIX | 0 | - | 0 | - | ns | ||||||||
| PSEN |
| |||||||||||||||
| Input instruction float after |
|
|
| tPXIZ † | - | 32 | - | ns | ||||||||
| PSEN |
| |||||||||||||||
| Address valid after |
|
|
|
|
|
| tPXAV † | 37 | - | - | ns | |||||
| PSEN |
| |||||||||||||||
| Address to valid instruction in | tAVIV | - | 148 | - | ns | |||||||||||
| Address float to |
|
|
|
|
|
|
| tAZPL | 0 | - | 0 | - | ns | |||
| PSEN |
| |||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
†Interfacing the GMS90X5XC series to devices with float times up to 35 ns is permissible. This limited bus contention will not cause
any damage to port 0 Drivers.
Jan. 2001 Ver 1.0 | 33 |
