LH79520N0Q000B1;55 NXP Semiconductors, LH79520N0Q000B1;55 Datasheet - Page 51

• Manufacturer Part Number: LH79520N0Q000B1;55
• Description: IC ARM7 BLUESTREAK MCU 176LQFP
• Manufacturer: NXP Semiconductors
• Series: BlueStreak ; LH7r

Specifications of LH79520N0Q000B1;55

• Package / Case: 176-LQFP
• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 77.4MHz
• Connectivity: EBI/EMI, IrDA, Microwire, SPI, SSI, SSP, UART/USART
• Peripherals: DMA, LCD, POR, PWM, WDT
• Number Of I /o: 64
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.62 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LH795
• Core: ARM7TDMI-S
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: JTAG, UART
• Maximum Clock Frequency: 77.4 MHz
• Number Of Programmable I/os: 64
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 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: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4331; 935285044557; LH79520N0Q000B1

System-on-Chip
SUGGESTED EXTERNAL COMPONENTS
nents for the 32.768 kHz crystal circuit to be used with
the NXP LH79520. The NAND gate represents the
logic inside the SoC. See the chart for crystal specifics.
Preliminary data sheet
Figure 33 shows the suggested external compo-
Figure 33. Suggested External Components, 32.768 kHz Oscillator (XTAL32IN and XTAL32OUT)
NOTES:
1. Y1 is a parallel-resonant type crystal. (See table)
2. The nominal values for C1 and C2 shown are for
3. The values for C1 and C2 are dependent upon
4. R1 must be in the circuit.
5. Ground connections should be short and return
6. Tolerance for R1, C1, C2 is ≤ 5%.
a crystal specified at 12.5 pF load capacitance (CL).
the cystal's specified load capacitance and PCB
stray capacitance.
to the ground plane which is connected to the
processor's core ground pins.
INTERNAL TO
THE LH79520
EXTERNAL TO
THE LH79520
Rev. 01 — 16 July 2007
NXP Semiconductors
ENABLE
XTAL32IN
RECOMMENDED CRYSTAL SPECIFICATIONS
PARAMETER
32.768 kHz Crystal
Tolerance
Aging
Load Capacitance
ESR (MAX.)
Drive Level
Recommended Part
for the 14.7456 MHz crystal circuit to be used with the
NXP LH79520. The NAND gate represents the logic
inside the SoC. See the chart for crystal specifics.
Figure 34 shows the suggested external components
C1
15 pF
GND
32.768 kHz
10 MΩ
Y1
R1
DESCRIPTION
Parallel Mode
±30 ppm
±3 ppm
12.5 pF
50 kΩ
1.0 µW (MAX.)
MTRON SX1555 or equivalent
XTAL32OUT
C2
18 pF
GND
79520-172
LH79520
51