参数资料
型号: ST92163N4G0
厂商: 意法半导体
英文描述: 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
中文描述: 16位产品全速USB微控制器16端点,20,000光盘和2K的RAM,I2C和脊髓损伤的复合设备,
文件页数: 102/224页
文件大小: 1372K
代理商: ST92163N4G0
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页当前第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页第189页第190页第191页第192页第193页第194页第195页第196页第197页第198页第199页第200页第201页第202页第203页第204页第205页第206页第207页第208页第209页第210页第211页第212页第213页第214页第215页第216页第217页第218页第219页第220页第221页第222页第223页第224页
102/224
ST92163 - I/O PORTS
INPUT/OUTPUT BIT CONFIGURATION
(Cont’d)
When Px.n is programmed as an Output
:
(Figure 58)
– The Output Buffer is turned on in an Open-drain
or Push-pull configuration.
– The data stored in the Output Master Latch is
copied both into the Input Latch and into the Out-
put Slave Latch, driving the I/O pin, at the end of
the execution of the instruction.
When Px.n is programmed as Bidirectional
:
(Figure 59)
– TheOutput Buffer is turned on in an Open-Drain
or Weak Pull-up configuration (except when dis-
abled in hardware).
– The data present on the I/O pin is sampled into
the Input Latch at the beginning of the execution
of the instruction.
– The data stored in the Output Master Latch is
copied into the Output Slave Latch, driving the I/
O pin, at the end of the execution of the instruc-
tion.
WARNING
: Due to the fact that in bidirectional
mode theexternal pin is read instead of the output
latch, particular care must be taken with arithme-
tic/logic and Boolean instructions performed on a
bidirectional port pin.
These instructions use a read-modify-write se-
quence, and the result written in the port register
depends on the logical level present on the exter-
nal pin.
This may bring unwanted modifications to the port
output register content.
For example:
Port register content, 0Fh
external port value, 03h
(Bits 3 and 2 are externally forced to 0)
A
bset
instruction on bit 7 will return:
Port register content, 83h
external port value, 83h
(Bits 3 and 2 have been cleared).
To avoid this situation, it is suggested that all oper-
ations on a port, using at least one bit in bidirec-
tional mode, are performed on a copy of the port
register, then transferring the result with a load in-
struction to the I/O port.
When Px.n is programmed as a digital Alter-
nate Function Output
:
(Figure 60)
– TheOutput Buffer is turned on in an Open-Drain
or Push-Pull configuration.
– The data present on the I/O pin is sampled into
the Input Latch at the beginning of the execution
of the instruction.
– Thesignal from an on-chip function is allowed to
load the Output Slave Latch driving the I/O pin.
Signal timing is under control of the alternate
function. If no alternate function is connected to
Px.n, the I/O pin is driven to a high level when in
Push-Pull configuration, and to a high imped-
ance state when in open drain configuration.
Figure 59. Bidirectional Configuration
n
n
Figure 60. Alternate Function Configuration
n
n
n
n
n
n
OUTPUT MASTER LATCH
INPUT LATCH
OUTPUT SLAVE LATCH
INTERNAL DATA BUS
I/O PIN
WEAK PULL-UP
OPEN DRAIN
TTL
(or Schmitt Trigger)
TO PERIPHERAL
INPUTS AND
INTERRUPTS
INPUT LATCH
FROM
INTERNAL DATA BUS
I/O PIN
OPEN DRAIN
PUSH-PULL
TTL
(or Schmitt Trigger)
PERIPHERAL
OUTPUT
TO PERIPHERAL
INPUTS AND
INTERRUPTS
OUTPUT SLAVE LATCH
相关PDF资料
PDF描述
ST92163N4G0V 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92163R4G0V 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92163R4T1V 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92E163R4T1V 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92T163R4T1V 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
相关代理商/技术参数
参数描述
ST92163N4G0E 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92163N4G0L 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92163N4G0V 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92163N4G1 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
ST92163N4G1E 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT