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鍨嬭櫉锛� MC908GR16AVFAER
寤犲晢锛� Freescale Semiconductor
鏂囦欢闋佹暩(sh霉)锛� 168/270闋�
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC MCU 8BIT 16K FLASH 48-LQFP
妯欐簴鍖呰锛� 2,000
绯诲垪锛� HC08
鏍稿績铏曠悊鍣細 HC08
鑺珨灏哄锛� 8-浣�
閫熷害锛� 8MHz
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澶栧湇瑷倷锛� LVD锛孭OR锛孭WM
杓稿叆/杓稿嚭鏁�(sh霉)锛� 37
绋嬪簭瀛樺劜鍣ㄥ閲忥細 16KB锛�16K x 8锛�
绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 闁冨瓨
RAM 瀹归噺锛� 1K x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 3 V ~ 5.5 V
鏁�(sh霉)鎿�(j霉)杞夋彌鍣細 A/D 8x10b
鎸暕鍣ㄥ瀷锛� 鍏ч儴
宸ヤ綔婧害锛� -40°C ~ 105°C
灏佽/澶栨锛� 48-LQFP
鍖呰锛� 甯跺嵎 (TR)
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Pin Functions
MC68HC908GR16A Data Sheet, Rev. 1.0
Freescale Semiconductor
25
1.5.5 CGM Power Supply Pins (VDDA and VSSA)
VDDA and VSSA are the power supply pins for the analog portion of the clock generator module (CGM).
Decoupling of these pins should be as per the digital supply. See Chapter 4 Clock Generator Module
1.5.6 External Filter Capacitor Pin (VCGMXFC)
CGMXFC is an external filter capacitor connection for the CGM. See Chapter 4 Clock Generator Module
1.5.7 ADC Power Supply/Reference Pins (VDDAD/VREFH and VSSAD/VREFL)
VDDAD and VSSAD are the power supply pins to the analog-to-digital converter (ADC). VREFH and VREFL
are the reference voltage pins for the ADC. VREFH is the high reference supply for the ADC, and by default
the VDDAD/VREFH pin should be externally filtered and connected to the same voltage potential as VDD.
VREFL is the low reference supply for the ADC, and by default the VSSAD/VREFL pin should be connected
to the same voltage potential as VSS. See Chapter 3 Analog-to-Digital Converter (ADC).
1.5.8 Port A Input/Output (I/O) Pins (PTA7/KBD7鈥揚TA0/KBD0)
PTA7鈥揚TA0 are general-purpose, bidirectional I/O port pins. Any or all of the port A pins can be
programmed to serve as keyboard interrupt pins. PTA7鈥揚TA4 are only available on the 48-pin LQFP
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
1.5.9 Port B I/O Pins (PTB7/AD7鈥揚TB0/AD0)
PTB7鈥揚TB0 are general-purpose, bidirectional I/O port pins that can also be used for analog-to-digital
converter (ADC) inputs. PTB7鈥揚TB4 are only available on the 48-pin LQFP package. See Chapter 12
1.5.10 Port C I/O Pins (PTC6鈥揚TC0)
PTC6 and PTC5 are general-purpose, bidirectional I/O port pins. PTC4鈥揚TC0 are general-purpose,
bidirectional I/O port pins that contain higher current sink/source capability. PTC6鈥揚TC2 are only
available on the 48-pin LQFP package. See Chapter 12 Input/Output (I/O) Ports.
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
1.5.11 Port D I/O Pins (PTD7/T2CH1鈥揚TD0/SS)
PTD7鈥揚TD0 are special-function, bidirectional I/O port pins. PTD3鈥揚TD0 can be programmed to be
serial peripheral interface (SPI) pins, while PTD7鈥揚TD4 can be individually programmed to be timer
interface module (TIM1 and TIM2) pins. PTD7 is only available on the 48-pin LQFP package. See
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
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