
168
CHAPTER 9 I/O PORT
■
Block Diagram of Port 0 Pins
Figure 9.3-1 is a block diagram of the port 0pins.
Figure 9.3-1 Block Diagram of port 0 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 DDR0 register.
■
Port 0 Registers
Port 0 registers are PDR0, DDR0 and RDR0. The bits making up each register correspond to the port 0
pins on a one-to-one basis. Table 9.3-2 lists the port 0 pins and their corresponding register bits.
See "1.7 I/O Circuit Types", for information on the circuit types.
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
A
b
o
u
t 50k
Direct re
s
o
u
rce inp
u
t
Table 9.3-2 Port 0 Pins and their Corresponding Register Bits
Port
Register bits and corresponding port pins
Port 0
PDR0, DDR0, RDR0
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Corresponding pin
P07
P06
P05
P04
P03
P02
P01
P00
Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
Страница 3: ......
Страница 5: ......
Страница 9: ...iv ...
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 ...
Страница 739: ......