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参数资料
| 型号： | SST89V54RDA-33-C-QIF |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, QCC40 |
| 封装： | ROHS COMPLIANT, MO-220IWJJD-5, WQFN-40 |
| 文件页数： | 3/84页 |
| 文件大小： | 1755K |
| 代理商： | SST89V54RDA-33-C-QIF |
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Data Sheet
FlashFlex MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
SST89V54RD2A/RDA / SST89V58RD2A/RDA
11
2007 Silicon Storage Technology, Inc.
S71339-01-000
1/07
2.1 Pin Descriptions
TABLE
2-1: Pin Descriptions (1 of 2)
Symbol
Type1
Name and Functions
P0[7:0]
I/O
Port 0: Port 0 is an 8-bit open drain bi-directional I/O port. As an output port each pin can
sink several LS TTL inputs. Port 0 pins float that have ‘1’s written to them, and in this state
can be used as high-impedance inputs. In this application, it uses strong internal pull-ups
when transitioning to VOH. Port 0 also receives the code bytes during the external host mode
programming, and outputs the code bytes during the external host mode verification. Exter-
nal pull-ups are required during program verification.
P1[7:0]
I/O with internal
pull-ups
Port 1: Port 1 is an 8-bit bi-directional I/O port with internal pull-ups. The Port 1 output buff-
ers can drive LS TTL inputs. Port 1 pins are pulled high by the internal pull-ups when “1”s
are written to them and can be used as inputs in this state. As inputs, Port 1 pins that are
externally pulled low will source current because of the internal pull-ups. P1[5, 6, 7] have
high current drive of 16 mA. Port 1 also receives the low-order address bytes during the
external host mode programming and verification.
P1[0]
I/O
T2: External count input to Timer/Counter 2 or Clock-out from Timer/Counter 2
P1[1]
I
T2EX: Timer/Counter 2 capture/reload trigger and direction control
P1[2]
I
ECI: PCA Timer/Counter External Input:
This signal is the external clock input for the PCA timer/counter.
P1[3]
I/O
CEX0: Compare/Capture Module External I/O
Each compare/capture module connects to a Port 1 pin for external I/O. When not used by
the PCA, this pin can handle standard I/O.
P1[4]
I/O
SS#: Master Input or Slave Output for SPI.
OR
CEX1: Compare/Capture Module External I/O
P1[5]
I/O
MOSI: Master Output line, Slave Input line for SPI
OR
CEX2: Compare/Capture Module External I/O
P1[6]
I/O
MISO: Master Input line, Slave Output line for SPI
OR
CEX3: Compare/Capture Module External I/O
P1[7]
I/O
SCK: Master clock output, slave clock input line for SPI
OR
CEX4: Compare/Capture Module External I/O
P2[7:0]
I/O with internal
pull-up
Port 2: Port 2 is an 8-bit bi-directional I/O port with internal pull-ups. Port 2 pins are pulled
high by the internal pull-ups when “1”s are written to them and can be used as inputs in this
state. As inputs, Port 2 pins that are externally pulled low will source current because of the
internal pull-ups. Port 2 sends the high-order address byte during fetches from external Pro-
gram memory and during accesses to external Data Memory that use 16-bit address
(MOVX@DPTR). In this application, it uses strong internal pull-ups when transitioning to
VOH. Port 2 also receives some control signals and high-order address bits during the exter-
nal host mode programming and verification.
P3[7:0]
I/O with internal
pull-up
Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. The Port 3 output buff-
ers can drive LS TTL inputs. Port 3 pins are pulled high by the internal pull-ups when “1”s
are written to them and can be used as inputs in this state. As inputs, Port 3 pins that are
externally pulled low will source current because of the internal pull-ups. Port 3 also
receives some control signals and high-order address bits during the external host mode
programming and verification.
P3[0]
I
RXD: Universal Asynchronous Receiver/Transmitter (UART) - Receive input
P3[1]
O
TXD: UART - Transmit output
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相关代理商/技术参数 |
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| SST89V554 | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89V554-25-C-NI | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
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| SST89V554-25-C-PJ | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
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