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參數(shù)資料
| 型號(hào)： | M68HC16Y1CFC |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, MICROCONTROLLER, PQFP16 |
| 封裝： | QFP-160 |
| 文件頁數(shù)： | 96/138頁 |
| 文件大小： | 784K |
| 代理商： | M68HC16Y1CFC |
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MOTOROLA
MC68HC16Y1
60
MC68HC16Y1TS/D
3.8.4 Port G
Port G is available in single-chip mode only. In single-chip mode, these pins are always congured for
general-purpose I/O.
This register can be read or written anytime the MCU is not in emulator mode.
The bits in this register control the direction of the pin drivers when the pins are congured as I/O. Any
bit in this register set to one congures the corresponding pin as an output. Any bit in this register
cleared to zero congures the corresponding pin as an input.
3.8.5 Port H
Port H is available in single-chip and 8-bit expanded modes only. The function of these pins is deter-
mined by operating mode — there is no pin assignment register associated with this port.
This register can be read or written anytime the MCU is not in emulator mode. Reset has no effect.
The bits in this register control the direction of the pin drivers when the pins are congured as I/O. Any
bit in this register set to one congures the corresponding pin as an output. Any bit in this register
cleared to zero congures the corresponding pin as an input.
3.9 Chip Selects
Typical microcontrollers require additional hardware to provide external chip select signals. The
MC68HC16Y1 includes nine programmable chip select circuits that can provide 2 to 13 clock cycle ac-
cess to external memory and peripherals. Two additional chip selects CSE and CSM provide emulator
support. Address block sizes of 2 Kbytes to 1 Mbyte can be selected. However, because ADDR[23:20]
= ADDR19 in the CPU16, 512-Kbyte blocks are the largest usable size.
PORTG — Port G Data Register
$YFFA0C
76543210
PG7
PG6
PG5
PG4
PG3
PG2
PG1
PG0
RESET:
UUUUUUUU
DDRG — Port G Data Direction Register
$YFFA0E
76543210
DDG7
DDG6
DDG5
DDG4
DDG3
DDG2
DDG1
DDG0
RESET:
00000000
PORTH — Port H Data Register
$YFFA0D
76543210
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
RESET:
UUUUUUUU
DDRH — Port H Data Direction Register
$YFFA0F
76543210
DDH7
DDH6
DDH5
DDH4
DDH3
DDH2
DDH1
DDH0
RESET:
00000000
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