908E625 Datasheet, PDF (11/48 Pages) Freescale Semiconductor, Inc – Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication

DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics
All characteristics are for the analog chip only. Please refer to the specification for 68HC908EY16 for characteristics of the
microcontroller chip. Characteristics noted under conditions 9.0 V ≤ V_SUP ≤ 16 V, -40°C ≤ T_J ≤ 125°C unless otherwise noted.
Typical values noted reflect the approximate parameter mean at T_A = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
LIN PHYSICAL LAYER
Propagation Delay ⁽¹²⁾, ⁽¹³⁾
TXD LOW to LIN LOW
TXD HIGH to LIN HIGH
LIN LOW to RXD LOW
LIN HIGH to RXD HIGH
TXD Symmetry
RXD Symmetry
Output Falling Edge Slew Rate ⁽¹²⁾, ⁽¹⁴⁾
80% to 20%
µs
t _TXD-LIN-low
–
–
6.0
t _TXD-LIN-high
–
–
6.0
t _LIN-RXD-low
–
4.0
8.0
t _LIN-RXD-
–
4.0
8.0
high
- 2.0
–
2.0
t _TXD-SYM
- 2.0
–
2.0
t _RXD-SYM
SR_F
V/µs
-1.0
- 2.0
- 3.0
Output Rising Edge Slew Rate ⁽¹²⁾, ⁽¹⁴⁾
20% to 80%, R_BUS > 1.0 kΩ, C_BUS < 10 nF
LIN Rise/Fall Slew Rate Symmetry ⁽¹²⁾, ⁽¹⁴⁾
SR_R
V/µs
1.0
2.0
3.0
SR_S
- 2.0
–
2.0
µs
HALL-EFFECT SENSOR INPUTS (H1:H3)
Propagation Delay
t _HPPD
–
1.0
–
µs
AUTONOMOUS WATCHDOG (AWD)
AWD Oscillator Period
t _OSC
–
40
–
µs
AWD Period Low = 512 t_OSC
AWD Period High = 256 t_OSC
AWD Cyclic Wake-Up On Time
t _AWDPH
16
22
28
ms
t _AWDPL
8.0
11
14
ms
t _AWDHPON
–
90
–
µs
Notes
12. All LIN characteristics are for initial LIN slew rate selection (20 kBaud) (SRS0:SRS1= 00).
13. See Figure 2.
14. See Figure 3.
Analog Integrated Circuit Device Data
Freescale Semiconductor
908E625
11