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参数资料
型号： SC9RS08KA1J3CDB
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO6
封装： 3 X 3 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, DFN-6
文件页数： 48/134页
文件大小： 3114K
代理商： SC9RS08KA1J3CDB
Chapter 2 Pins and Connections
SC9RS08KA2 Series Data Sheet, Rev. 1
20
Freescale Semiconductor
cables and the absolute value of the internal pullup device play almost no role in determining rise and fall
times on the BKGD pin.
2.4.4
General-Purpose I/O and Peripheral Ports
The remaining pins are shared among general-purpose I/O and on-chip peripheral functions such as timers
and analog comparator. Immediately after reset, all of these pins are configured as high-impedance
general-purpose inputs with internal pullup/pulldown devices disabled.
NOTE
To avoid extra current drain from floating input pins, the reset initialization
routine in the application program should either enable on-chip
pullup/pulldown devices or change the direction of unused pins to outputs.
Table 2-1. Pin Sharing Reference
Pin Name
Direction
Pullup/Pulldown1
1 SWC is software-controlled pullup/pulldown resistor; the register is associated with the respective port.
Alternative Functions2
2 Alternative functions are listed lowest priority first. For example, GPIO is the lowest priority alternative function of the
PTA0 pin; ACMP+ is the highest priority alternative function of the PTA0 pin.
VDD
——
Power
VSS
—
Ground
PTA0
I/O
SWC
PTA0
KBIP0
ACMP+
General-purpose input/output (GPIO)
Keyboard interrupt (stop/wait wakeup only)
Analog comparator input
PTA1
I/O
SWC
PTA1
KBIP1
ACMP-
General-purpose input/output (GPIO)
Keyboard interrupt (stop/wait wakeup only)
Analog comparator input
PTA2
I
SWC4
PTA2
KBIP2
TCLK
RESET
VPP
General-purpose input
Keyboard interrupt (stop/wait wakeup only)
Modulo timer clock source
Reset
VPP
PTA3
I/O3
3 Output-only when configured as PTA3 function.
—4
4 When PTA2 or PTA3 is configured as RESET or BKGD/MS, respectively, pullup is enabled. When V
PP is attached,
pullup/pulldown is disabled automatically.
PTA3
ACMPO
BKGD
MS
General-purpose output
Analog comparator output
Background debug data
Mode select
PTA45
5 This pin is not available in 6-pin package. Enabling either the pullup or pulldown device is recommended to prevent extra
current leakage from the floating input pin.
I/O
SWC
PTA4
KBIP4
General-purpose input/output (GPIO)
Keyboard interrupt (stop/wait wakeup only)
PTA55
I/O
SWC
PTA5
KBIP5
General-purpose input/output (GPIO)
Keyboard interrupt (stop/wait wakeup only)
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相关代理商/技术参数
参数描述
SC9RS08KA1J3CPC 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:RS08 Microcontrollers
SC9RS08KA1J3CSC 制造商:Freescale Semiconductor 功能描述:8-BIT RS08 CISC 1KB FLASH 2.5V/3.3V/5V 8-PIN SOIC N RAIL - Rail/Tube 制造商:Freescale Semiconductor 功能描述:1K FLASH W/ ACMP 62 RAM
SC9RS08KA2 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:RS08 Microcontrollers
SC9RS08KA2J3CDB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:RS08 Microcontrollers
SC9RS08KA2J3CPC 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:RS08 Microcontrollers
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