Analog Integrated Circuit Device Data
16
Freescale Semiconductor
908E622
ELECTRICAL CHARACTERISTICS
MICROCONTROLLER PARAMETRICS
MICROCONTROLLER PARAMETRICS
SPI INTERFACE TIMING
SPI Operating Recommended Frequency
(31)fSPIOP
0.25
—
4.0
MHz
State Machine
Reset Low-level Duration after VDD High
tRST
0.8
1.25
1.94
ms
Normal Request Timeout
tNORMREQ
51
80
150
ms
Window Watchdog Timer(32)
Watchdog Period (WDP1:0 = 00)
tWD80
52
80
124
ms
Watchdog Period (WDP1:0 = 01)
tWD40
26
40
62
ms
Watchdog Period (WDP1:0 = 10)
tWD20
13
20
31
ms
Watchdog Period (WDP1:0 = 11)
tWD10
6.5
10
15.5
ms
Notes
31.
This parameter is guaranteed by process monitoring but is not production tested.
32.
Table 5. Microcontroller
For a detailed microcontroller description, refer to the MC68HC908EY16 datasheet.
Module
Description
Core
High performance HC08 core with a maximum internal bus frequency of 8.0 MHz
Timer
Two 16-bit timers with 2 channels (TIM A and TIM B)
Flash
16 k Bytes
RAM
512 Bytes
ADC
10-Bit Analog-to-Digital Converter
SPI
SPI module
ESCI
Standard serial communication interface (SCI) module
Bit-time measurement
Arbitration
Prescaler with fine baudrate adjustment
ICG
Internal Clock Generation Module
Table 4. Dynamic Electrical Characteristics (continued)
All characteristics are for the analog chip only. Please refer to the 68HC908EY16 datasheet for characteristics of the
microcontroller chip. Characteristics noted under conditions 9.0 V ≤ VSUP ≤ 16 V, -40 °C ≤ TJ ≤ 125 °C, unless otherwise noted.
Typical values noted reflect the approximate parameter mean at TA = 25 °C under nominal conditions, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit