NAND08GAH0A NUMONYX [Numonyx B.V], NAND08GAH0A Datasheet - Page 16

• Manufacturer Part Number: NAND08GAH0A
• Manufacturer: NUMONYX [Numonyx B.V]

MultiMediaCard interface
4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
16/116
MultiMediaCard interface
The signal/pin assignments are listed in
Figure 2
Signals description
Clock (CLK)
The Clock input, CLK, is used to synchronize the memory to the host during command and
data transfers. Each clock cycle gates one bit on the command and on all the data lines. The
Clock frequency, f
Command (CMD)
The CMD signal is a bidirectional command channel used for device initialization and
command transfer. The CMD signal has two operating modes: open-drain and push-pull.
The open-drain mode is used for initialization, while the push-pull mode is used for fast
command transfer. Commands are sent by the MultiMediaCard bus master (or host) to the
device who answers by sending back responses.
Input/outputs (DAT0-DAT7)
DAT0 to DAT7 are bidirectional data channels. The signals operate in push-pull mode. The
NAND08GAH0A and NAND16GAH0D include internal pull ups for all data lines. These
signals cannot be driven simultaneously by the host and the NAND08GAH0A device.
By default, after power-up or hardware reset, only DAT0 is used for data transfers. The host
can configure the device to use a wider data bus, DAT0, DAT0-DAT3 or DAT0-DAT7, for data
transfer.
V
V
power supply for all operations (read, program and erase).
V
Ground, V
ground.
V
V
independently from V
The input/output voltage (V
range) or 2.7 V and 3.6 V (high voltage range).
CC
CCQ
CC
SS
CCQ
provides the power supply to the internal core of the memory device. It is the main
ground
core supply voltage
provides the power supply to the I/O pins and enables all outputs to be powered
input/output supply voltage
and
SS,
Figure 3: Form
is the reference for the power supply. It must be connected to the system
PP
, may vary between zero and the maximum clock frequency.
CC
.
CCQ
factor.
) can be either within 1.65/1.7 V and 1.95 V (low voltage
Table
5. Refer to this table in conjunction with
NAND08GAH0A, NAND16GAH0D