MC68HC912DG128 Datasheet, PDF (388/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Electrical Specifications
Table 19-3. DC Electrical Characteristics
V_DD = 5.0 Vdc ±10%, V_SS = 0 Vdc, T_A = T_L to T_H, unless otherwise noted
Characteristic
Symbol
Min
Ram standby current
I_sb
—
DC injection current^{(3) (4) (5) (6) (7)}
(V_NEGCLAMP=V_SS–0.3V, V_POSTCLAMP=V_DDE+0.3)
Steady state single pin limit
Steady state package limit includes sum of all stressed pins (25
pins max.)
Transient single pin limit
Transient package limit includes sum of all stressed pins (25 pins
max.)
I_ICsss
I_ICssP
I_ICTRs
I_ICTRP
–0.5
–10
–25
–25
Max
50
0.5
10
25
25
Unit
µA
mA
1. Specification is for parts in the -40 to +85°C range. Higher temperature ranges will result in increased
current leakage.
2. See Table 19-5.
3. It is recommended to tie V_DD if standby mode is not being used.
4. All functional no-supply pins are internally clamped to V_SS and V_DD or V_SS and V_DDX.
5. Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
6. Power supply must maintain regulation within operating V_DD or V_DDX range during instantaneous and operating maximum
current conditions. If positive injection current (V_in>V_DD or V_in>V_DDX) is greater than I_DD or I_DDX, injection current may flow
out of V_DD/V_DDX and could result in external power supply going out of regulation. Ensure external V_DD/V_DDX load will shunt
current greater than maximum injection current. This will be the greatest risk when the MCU is not consuming power. Ex-
amples are: if no system clock is present, or if clock rate is very low, which would reduce overall power consumption.
7. Current injection specification does not include ATD pins.
Technical Data
388
MC68HC912DG128 — Rev 3.0
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA