Rainbow Electronics W78C438C - Manual (Page 11)

W78C438C
Publication Release Date: July 1998
- 11 - Revision A1
DC CHARACTERISTICS
V DD − V SS = 5V ±10%, T
A = 25 ° C, F
OSC = 20 MHz, unless otherwise specified.
PARAMETER SYM. TEST CONDITIONS MIN. TYP. MAX. UNIT
Oper. Voltage V DD 4.5 5 5.5 V
Oper. Current I DD * No load - - 20 mA
Idle Current I IDLE Program idle mode - - 7 mA
Pwdn Current I PWDN Program power-down mode - - 50 µA
Input Leakage
Current I LK1 INT2 , INT3
Internal pull-high Notes 1, 2
-300 - +10 µA
Input Leakage
Current I LK2 RESET
Internal pull-low Notes 1, 2
-10 - +300 µA
Input Leakage
Current I LK3 EA , Port 0, DP4 Note 1
-10 - +10 µA
Input Leakage
Current I LK4 P1, P2, P3, P8 Note 1 -50 - +10 µA
Output Low Voltage V OL1 I OL1 = 2 mA (Port 1, 2, 3, 8) - - 0.45 V
Output High Voltage V OH1 I OH1 = -100 µA (Port 1, 2, 3, 8) 2.4 - - V
Output Low Voltage V OL2 I OL2 = 4mA Note 3
(ALE, PSEN, P0, DP4)
- - 0.45 V
Output High Voltage V OH2 I OH2 = -400 µA
Note 3
(ALE, PSEN, P0, DP4)
2.4 - - V
Output Low Voltage V OL3 I OL2 = 2 mA (AP5, AP6, AP7) - - 0.45 V
Output High Voltage V OH3 I OH2 = -100
µA (AP5, AP6, AP7) 2.4 - - V
Input Voltage V ILT V DD = 5V
±10% 0 - 0.8 V
Input Voltage V IHT V DD = 5V ±10% 2.4 - Note 4 V
Input Voltage V ILC V DD = 5V
±10%, XTAL1
Note 5 0 - 0.8 V
Input Voltage V IHC V DD = 5V ±10%, XTAL1
Note 5
3.5 - Note 4 V
Input Voltage V ILR V DD = 5V
±10%, RESET
Note 5 0 - 0.8 V
Input Voltage V IHR V DD = 5V
±10%, RESET
Note 5
2.4 - Note 4 V
Notes:
1. 0 < V IN < V DD , for INT2 , INT3 , RESET, EA , Port 0, DP4, P1, P2, P3 and P8 inputs in leakage.
2. Using an internal pull low/high resistor (approx. 30K).
3. ALE, PSEN , P0 and DP4 in external program or data access mode.
4. The maximum input voltage is V DD +0.2V.
5. XTAL1 is a CMOS input and RESET is a Schmitt trigger input.