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CHAPTER 9 I/O PORT
9.9.1
Port B Registers
This section describes the port B registers.
■
Port B Register Function
Table 9.9-2 lists the port B register functions.
Table 9.9-3 lists the correspondence between port B pins and each register bit.
Table 9.9-2 Port B Register Function
Register
name
Data
Read
Read read-modify-write
Write
PDRB
0
Pin state is "L" level.
PDR value is "0".
As output port, outputs
"L" level.
1
Pin state is "H" level.
PDR value is "1".
As output port, outputs
"H" level.
DDRB
0
Port input enabled
1
Port output enabled
ILSR3
0
Hysteresis input level
1
Automotive input level
Table 9.9-3 Correspondence Between Registers and Pins for Port B
Correspondence between related register bits and pins
Pin name
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
PDRB
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
DDRB
ILSR3
bit0
bit0
bit0
bit0
bit0
bit0
bit0
bit0
Содержание F2 MC-8FX Family
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Страница 30: ...16 CHAPTER 1 DESCRIPTION 1 FPT 64P M23 FPT 64P M24 2 For the I O circuit type refer to 1 8 I O Circuit Type ...
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Страница 35: ...21 CHAPTER 2 HANDLING DEVICES This chapter gives notes on using 2 1 Device Handling Precautions ...
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Страница 39: ...25 CHAPTER 3 MEMORY SPACE This chapter describes memory space 3 1 Memory Space 3 2 Memory Map ...
Страница 43: ...29 CHAPTER 4 MEMORY ACCESS MODE This chapter describes the memory access mode 4 1 Memory Access Mode ...
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Страница 105: ...91 CHAPTER 8 INTERRUPTS This chapter explains the interrupts 8 1 Interrupts ...
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Страница 482: ...468 CHAPTER 25 LOW VOLTAGE DETECTION RESET CIRCUIT ...
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Страница 599: ...585 Pin Function Index V2 LCD power supply driving pin 2 439 V3 LCD power supply driving pin 3 439 ...
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