LH79525N0Q100A1;55 NXP Semiconductors, LH79525N0Q100A1;55 Datasheet - Page 42

• Manufacturer Part Number: LH79525N0Q100A1;55
• Description: IC ARM7 BLUESTREAK MCU 176LQFP
• Manufacturer: NXP Semiconductors
• Series: BlueStreak ; LH7r

Specifications of LH79525N0Q100A1;55

• Package / Case: 176-LQFP
• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 76.2MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, Microwire, SPI, SSI, SSP, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 86
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.7 V ~ 3.6 V
• Data Converters: A/D 10x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LH795
• Core: RISC
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, UART
• Maximum Clock Frequency: 50.803 MHz
• Number Of Timers: 4
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4333; 935285052557; LH79525N0Q100A1

LH79524/LH79525
SDRAM MEMORY CONTROLLER WAVEFORMS
SDRAM Burst Read (page already open). Figure 22
shows the waveform and timing for SDRAM to Activate
a Bank and Write.
42
Figure 21 shows the waveform and timing for an
NOTES:
1. SDRAMcmd is the combination of nRAS, nCAS, nSDWE, and nSDCS(X).
2. tOVXXX represents tOVRA, tOVCA, tOVSDW, or tOVSC.
3. tOHXXX represents tOHRA, tOHCA, tOHSDW, or tOHSC.
4. SDCKE is HIGH.
SDRAMcmd
D[31:0]
A[14:0]
DQMx
SCLK
t SDCLK
Figure 21. SDRAM Burst Read
NXP Semiconductors
t OVXXX
Rev. 01 — 16 July 2007
t OVDQ
READ
COLUMN
BANK,
t OHXXX
t OVA
LATENCY = 2
NOP
CAS
tISD tIHD
NOP
DATA n
NOP
t OHDQ
DATA n + 1
READ
DATA n + 2
NOP
DATA n + 3
Preliminary data sheet
NOP
System-on-Chip
LH79525-3