MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 226
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
MC68HC908GR8CD
Manufacturer Part Number
MC68HC908GR8CD
Description
8-bit Microcontrollers - MCU 8 Bit 8MHz
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC908GR8CD.pdf
(286 pages)
Specifications of MC68HC908GR8CD
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
HC08
Data Bus Width
8 bit
Maximum Clock Frequency
8 MHz
Program Memory Size
64 KB
Data Ram Size
384 B
Operating Supply Voltage
3 V to 5 V
Package / Case
SOIC-28
Mounting Style
SMD/SMT
Data Rom Size
64 KB
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
21
Program Memory Type
Flash
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Timebase Module (TBM)
21.5 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-consumption standby modes.
21.5.1 Wait Mode
The timebase module remains active after execution of the WAIT instruction. In wait mode, the timebase
register is not accessible by the CPU.
If the timebase functions are not required during wait mode, reduce the power consumption by stopping
the timebase before enabling the WAIT instruction.
21.5.2 Stop Mode
The timebase module may remain active after execution of the STOP instruction if the oscillator has been
enabled to operate during stop mode through the OSCSTOPEN bit in the CONFIG register. The timebase
module can be used in this mode to generate a periodic wakeup from stop mode.
If the oscillator has not been enabled to operate in stop mode, the timebase module will not be active
during STOP mode. In stop mode, the timebase register is not accessible by the CPU.
226
CGMXCLK
÷2
÷2
÷2
÷2
÷2
÷2
÷2
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
Figure 21-1. Timebase Block Diagram
÷2
÷2
÷2
÷2
÷2
÷2
÷2
÷2
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
TBON
R
Freescale Semiconductor
TBIF
TBMINT
TBIE
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