ELANSC400-66AI AMD (ADVANCED MICRO DEVICES), ELANSC400-66AI Datasheet - Page 48

• Manufacturer Part Number: ELANSC400-66AI
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ELANSC400-66AI

• Cpu Family: Elan
• Device Core Size: 16/32Bit
• Frequency (max): 66MHz
• Interface Type: ISA
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 95C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 292
• Package Type: BGA
• Lead Free Status / Rohs Status: Not Compliant

Notes:
1. The shared GPIO20–GPIO15, GPIO_CS14–GPIO_CS13, and PC Card battery signals:
2. The PC Card signals MCEL_B, MCEH_B, RST_B, REG_B, CD_B, RDY_B , BVD1_B, BVD2_B, WP_B, CD_A2,
3. The shared parallel port, PC Card Socket B control, and GPIO signals:
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As GPIO_CSxs, the signals are active in Suspend mode: that is, if they are inputs before Suspend, they are still inputs during
Suspend (the GPIO_CSs can be used to wake up the system); if they are outputs before Suspend, they are still outputs during
Suspend (the GPIO_CSs can be programmed to change state by mode). As inputs, the pullup or pulldown on the signal can be
disabled; if disabled, it is disabled in all modes. When the signal is an output, the built-in resistors are automatically disabled.
When enabled, the Latched Battery Low Detect function (LBL2) that is shared on GPIO19 is an output in all modes; there are
no pullup or pulldown resistors active.
On the ÉlanSC400 microcontroller, the PC Card functions shared on these pins are programmable by PC Card socket; the
pin multiplexing options are explained earlier in this document. For the PC Card power control (PCMA_VCC, PCMA_VPP1,
PCMA_VPP2, PCMB_VCC, PCMB_VPP1, PCMB_VPP2), the signals are outputs for each mode.
For the second Card Detect (CD_A2):
PCMB_VPP2, PCMB_VPP1, PCMB_VCC, PCMA_VPP1, PCMA_VPP2, and PCMA_VCC are not supported on the
ÉlanSC410 microcontroller.
Summary: Shared parallel port/PC Card Socket B/GPIO signals: Built-in pullup and pulldown resistors that are invoked by:
–Reset invokes pullup.
–During normal operation, the pullup resistor can be disabled by a register bit.
–During Suspend mode, the input will have a pulldown if the PC Card Socket A interface is programmed to be powered off
–These signals default to the GPIO interface on reset.
–As a parallel port in Suspend mode, these signals are programmable to accommodate the parallel port powered up or
–As PC Card control on the ÉlanSC400 microcontroller, these signals have the same features as the Socket A control
–As GPIOs, these signals are not handled specially in Suspend, they remain the same as they were when the chip was
–Reset invokes pullups
–As parallel port signals:
–As PC Card Socket B signals (ÉlanSC400 microcontroller only):
–As GPIO signals:
in Suspend mode (Power-Down Group G). If the socket is not programmed to be powered off in Suspend mode, the input
will have the same state as when operating: the pullup is programmable to be enabled or not.
down.
signals.
active (i.e., they remain as inputs with the pullup enabled or not, or continue to drive out the same value if they were
outputs).
•Operating: pullups are enabled if not EPP mode. Outputs without pullup or pulldowns if EPP mode.
•Suspend: pullups are enabled, unless the parallel port is programmed to be powered off in Suspend mode, in which
•If EPP mode is enabled for the parallel port, the outputs are driven out at their last value in Suspend mode.
•Operating: outputs have no pullups or pulldowns; inputs have pullups that can be disabled by programming a bit.
•Suspend: outputs are driven out inactive with no pullups or pulldowns unless the PC Card Socket B is programmed
•Operating or Suspend: as outputs they have no pullups or pulldowns; as inputs they have pullups that can be dis-
case pulldowns are enabled.
to be powered off in Suspend mode; then the outputs go to three-state with pulldown resistors; inputs will be the
same as they were when operating, with a pullup resistor that can be disabled by programming, unless the PC Card
Socket B is programmed to be powered off in Suspend mode (Power-Down Group H), in which case the inputs have
pulldown resistors enabled.
abled by programming a bit; no change of state when the system goes to Suspend.
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet