参数资料
型号: MC68HC11F1VPU4
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: Technical Summary 8-Bit Microcontroller
中文描述: 8-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, LQFP-80
文件页数: 147/163页
文件大小: 711K
代理商: MC68HC11F1VPU4
MOTOROLA
PARALLEL INPUT/OUTPUT
MC68HC11F1
6-4
TECHNICAL DATA
Bits [7:6] — Not implemented
Always read zero
DDD[5:0] — Data Direction for Port D
0 = Input
1 = Output
NOTE
When the SPI system is in slave mode, DDD5 has no meaning nor
effect. When the SPI system is in master mode, DDD5 determines
whether bit 5 of PORTD is an error detect input (DDD5 = 0) or a gen-
eral-purpose output (DDD5 = 1). If the SPI system is enabled and ex-
pects any of bits [4:2] to be an input, that bit will be an input
regardless of the state of the associated DDR bit. If any of bits [4:2]
are expected to be outputs that bit will be an output only if the asso-
ciated DDR bit is set.
6.5 Port E
Port E has eight general-purpose input pins and shares functions with the A/D convert-
er system. When some port E pins are being used for general-purpose input and oth-
ers are being used as A/D inputs, PORTE should not be read during the sample
portion of an A/D conversion.
6.6 Port F
Reset state is mode dependent. In single-chip or bootstrap modes, port F pins are gen-
eral-purpose outputs. In expanded and test modes, port F pins are low order address
outputs and PORTF is not in the memory map.
DDRD — Data Direction Register for Port D
$1009
Bit 7
654321
Bit 0
DDD5
DDD4
DDD3
DDD2
DDD1
DDD0
RESET:
0000000
0
PORTE — Port E Data
$100A
Bit 7
654321
Bit 0
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
RESET:
IIIIIII
I
Alt. Pin
Func.:
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
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