您的位置：维库电子市场网 > Datasheet > ELANSC300-33KI

ELANSC300-33KI Datasheet

  • ELANSC300-33KI

  • Highly Integrated, Low-Power, 32-Bit Microcontroller

  • 1344.13KB

  • 139页

  • AMD

阅览下载 纠错 0

扫码查看芯片数据手册

上传产品规格书

PDF预览

P R E L I M I N A R Y
ICDIR
RST_A, RST_B
Card Data Direction (Output)
This signal controls the direction of the card data buff-
ers or translators, working in conjunction with the
MCEL_x
and
MCEH_x
card enable signals to control the
data buffers on the card interface. When this signal is
High, the data flow is from the 脡lanSC300 microcon-
troller to the card socket, indicating a data write cycle.
When this signal is Low, the data flow is from the card
socket into the 脡lanSC300 microcontroller, indicating a
read cycle. Note that PCMCIA bus buffering may or
may not be implemented in a system design.
MCEH_A, MCEH_B
Card Reset (Outputs; Active High)
These signals reset their respective cards. When ac-
tive, this signal clears the Card Configuration Option
register, thus placing a card in a memory-only mode.
VPP_A, VPP_B
Program and Peripheral Voltage Control
(Output; Active High)
These signals can be used to enable the programming
voltages to their respective card interfaces.
WAIT_AB
Extend Bus Cycle (Input; Active Low)
This signal delays the completion of the memory ac-
cess or I/O access that is currently in progress. When
this signal is asserted (Low), wait states will be inserted
into the cycle in progress. A two-card solution needs
each slot鈥檚 WAIT_AB signal 鈥淎NDed鈥?before being
input to the 脡lanSC300 microcontroller.
WP_A (IOIS16A), WP_B (IOIS16B)
Card Enables, High Byte (Output; Active Low)
These signals enable odd address bytes for their re-
spective card interfaces.
MCEL_A, MCEL_B
Card Enables, Low Byte (Output; Active Low)
These signals enable even address bytes for their re-
spective card interfaces.
PCMCOE
Write Protect (Inputs; Active High)
When a memory interface is selected, this signal indi-
cates the status of the targeted device鈥檚 Write Protect
Switch. When the targeted device is configured for an
I/O interface, the WP_A signal is used to indicate that
the currently accessed port is a 16-bit port (IOIS16x ac-
tive Low).
Both WP_A and WP_B signals indicate that the tar-
geted device is a 16-bit device during I/O access to the
targeted device. When the targeted device is config-
ured as an I/O access, the two signals are OR鈥檇 to-
gether to generate the
IOIS16x
signal. When the
targeted device is configured as an I/O access, there is
basically no difference between the WP_A and WP_B
signals.
Card Memory Output Enable (Output, Active Low)
The Parallel Port SLCTIN signal can be programmed to
become PCMCOE. PCMCOE indicates that a memory
read cycle from the card interface is being performed.
PCMCWE
Card Memory Write Enable (Output, Active Low)
The Parallel Port INIT signal can be programmed to be-
come PCMCWE. PCMCWE indicates that a memory
write cycle to the card interface is being performed.
RDY_A (IREQ_A), RDY_B (IREQ_B)
Card Ready (Inputs; Active High)
This signal indicates that the respective card is ready
to accept a new data transfer command if a memory in-
terface is selected. If the card interface is configured as
an I/O interface, the Socket A I/O card鈥檚 IREQ_A signal
uses RDY_A as a general purpose input pin that may
be used as the card interrupt request input into the
脡lanSC300 microcontroller (active High). For more in-
formation about socket A card鈥檚 IREQ_A signal, see
Chapter 5 in the
脡lan
TM
SC300 Microcontroller Pro-
grammer鈥檚 Reference Manual
, order #18470.
REG_A, REG_B
Attribute Memory Select (Output; Active Low)
This signal selects either the Attribute Memory or the
Common Memory. This signal will be inactive (High) for
accesses to Common Memory, and asserted (Low) for
accesses to Attribute Memory. This signal is also as-
serted (Low) for all I/O accesses.
脡lan鈩C300 Microcontroller Data Sheet
39

ELANSC300-33KI相关型号PDF文件下载

您可能感兴趣的PDF文件资料

热门IC型号推荐

©2024 维库电子市场网（www.dzsc.com）　备案号：浙B2-20050339-1 经营许可证：浙B2-20210386版权声明
买家服务热线：0571-85317607 | 买家服务部QQ： QQ:1609526468
卖家服务热线：0571-85317607 | 卖家服务部QQ： QQ:331652727

扫码下载APP，
一键连接广大的电子世界。

在线人工客服

买家服务：
卖家服务：

0571-85317607

客服在线时间周一至周五
9:00-17:30

关注官方微信号，
第一时间获取资讯。

建议反馈
返回顶部

建议反馈

联系人：

联系方式：

按住滑块，拖拽到最右边
>>
感谢您向阿库提出的宝贵意见，您的参与是维库提升服务的动力！意见一经采纳，将有感恩红包奉上哦！

PDF纠错X

投诉电话：0571-85317607 投诉QQ：

如选匿名将无法为您反馈投诉结果，建议实名投诉！