LH79520N0M000B1 Sharp Microelectronics, LH79520N0M000B1 Datasheet - Page 43

• Manufacturer Part Number: LH79520N0M000B1
• Description: IC ARM7 BLUESTREAK MCU 176LQFP
• Manufacturer: Sharp Microelectronics
• Series: BlueStreak ; LH7r

Specifications of LH79520N0M000B1

• Rohs Status: RoHS non-compliant
• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 77.4MHz
• Connectivity: IrDA, Microwire, SPI, SSP, UART/USART
• Peripherals: DMA, LCD, 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: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LQFP
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: 425-1820; LH79520N0M000

System-on-Chip
SUGGESTED EXTERNAL COMPONENTS
nents for the 32.768 kHz crystal circuit to be used with
Preliminary Data Sheet
Figure 26 shows the suggested external compo-
Figure 26. 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
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
5%.
ENABLE
9/10/03
XTALIN
RECOMMENDED CRYSTAL SPECIFICATIONS
PARAMETER
32.768 kHz Crystal
Tolerance
Aging
Load Capacitance
ESR (MAX.)
Drive Level
Recommended Part
the SHARP LH79520. The NAND gate represents the
logic inside the SoC. See the chart for crystal specifics.
C1
15 pF
GND
32.768 kHz
10 M
Y1
R1
DESCRIPTION
Parallel Mode
±30 ppm
±3 ppm
12.5 pF
50 k
1.0 µW (MAX.)
MTRON SX1555 or equivalent
XTALOUT
C2
18 pF
GND
79520-172
LH79520
43