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174
CHAPTER 9 I/O PORT
■
Block Diagram of Port 1 Pins
Figure 9.4-1 is a block diagram of port 1 pins.
Figure 9.4-1 Block Diagram of Port 1 Pins
When the resource output enable bit is set, the port is forcibly caused to function as resource output pins
regardless of the value in the DDR1 register.
■
Port 1 Registers
Port 1 registers are PDR1, DDR1 and RDR1. The bits making up each register correspond to the port 1
pins on a one-to-one basis. Table 9.4-2 lists the port 1 pins and their corresponding register bits.
Inter
n
a
l d
a
t
a
bus
Port d
a
t
a
regi
s
ter (PDR)
PDR re
a
d
PDR write
O
u
tp
u
t l
a
tch
DDR re
a
d
DDR write
Direction l
a
tch
Port d
a
t
a
direction regi
s
ter (DDR)
Pin
S
t
a
nd
b
y control (
S
PL = 1)
Re
s
o
u
rce o
u
tp
u
t
Re
s
o
u
rce o
u
tp
u
t en
ab
le
RDR
P
u
ll-
u
p re
s
i
s
tor
Re
s
o
u
rce inp
u
t
A
b
o
u
t 50k
Table 9.4-2 Port 1 Pins and their Corresponding Register Bits
Port
Register bits and corresponding port pins
Port 1
PDR1, DDR1, RDR1
bit15
bit14
bit13
bit12
bit11
bit10
bit9
bit8
Corresponding pin
P17
P16
P15
P14
P13
P12
P11
P10
Содержание MB90460 Series
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Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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