M36W0R6040T3 Datasheet, PDF (9/23 Pages) Numonyx B.V – 64-Mbit (4 Mbits ×16, multiple bank, burst) Flash memory and 16-Mbit (1 Mbit ×16) or 32-Mbit (2 Mbits x16) PSRAM MCP

M36P0R9070E0
2
Signal descriptions
Signal descriptions
See Figure 1., Logic diagram and Table 1., Signal names, for a brief overview of the signals
connected to this device.
2.1
Address inputs (A0-A24)
Addresses A0-A22 are common inputs for the Flash memory and PSRAM components.
Addresses A23 and A24 are inputs for Flash memory components only. The Address Inputs
select the cells in the memory array to access during Bus Read operations. During Bus
Write operations they control the commands sent to the Command Interface of the internal
state machine. The Flash memory is accessed through the Chip Enable signal (E_F) and
through the Write Enable signal (W_F), while the PSRAM is accessed through the Chip
Enable signal (E_P) and the Write Enable signal (W_P).
E_F Low, and E_P must not be Low at the same time.
2.2
Data input/output (DQ0-DQ15)
The Data I/O output the data stored at the selected address during a Bus Read operation or
input a command or the data to be programmed during a Bus Write operation.
For the PSRAM component, the upper Byte Data Inputs/Outputs (DQ8-DQ15) carry the
data to or from the upper part of the selected address when Upper Byte Enable (UB_P) is
driven Low. The lower Byte Data Inputs/Outputs (DQ0-DQ7) carry the data to or from the
lower part of the selected address when Lower Byte Enable (LB_P) is driven Low. When both
UB_P and LB_P are disabled, the Data Inputs/ Outputs are high impedance.
2.3
Latch Enable (L)
The Latch Enable pin is common to the Flash memory and PSRAM components.
For details of how the Latch Enable signal behaves, please refer to the datasheets of the
respective memory components: M69KB128AB for the PSRAM and M58PR512J for the
Flash memory.
2.4
Clock (K)
The Clock input pin is common to the Flash memory and PSRAM components.
For details of how the Clock signal behaves, please refer to the datasheets of the respective
memory components: M69KB128AB for the PSRAM and M58PR512J for the Flash
memory.
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