AT89C5130A-RDRUM Atmel, AT89C5130A-RDRUM Datasheet - Page 151
AT89C5130A-RDRUM
Manufacturer Part Number
AT89C5130A-RDRUM
Description
MCU 8051 16K FLASH USB 64-VQFP
Manufacturer
Atmel
Series
AT89C513xr
Datasheet
1.AT89C5130A-PUTUM.pdf
(188 pages)
Specifications of AT89C5130A-RDRUM
Core Processor
C52X2
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
LED, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Processor Series
AT89x
Core
8051
Data Bus Width
8 bit
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
AT89STK-05
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Available stocks
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Manufacturer
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22. Reset
22.1
22.2
22.3
4337K–USB–04/08
Introduction
Reset Input
Reset Output
The reset sources are: Power Management, Hardware Watchdog, PCA Watchdog and Reset
input.
Figure 22-1. Reset schematic
The Reset input can be used to force a reset pulse longer than the internal reset controlled by
the Power Monitor. RST input has a pull-up resistor allowing power-on reset by simply connect-
ing an external capacitor to V
characteristics are discussed in the Section “DC Characteristics” of the AT89C5130A/31A-M
datasheet.
Figure 22-2. Reset Circuitry and Power-On Reset
As detailed in Section “Hardware Watchdog Timer”, page 158, the WDT generates a 96-clock
period pulse on the RST pin. In order to properly propagate this pulse to the rest of the applica-
tion in case of external capacitor or power-supply supervisor circuit, a 1 kΩ resistor must be
added as shown Figure 22-3.
RST
RST
Watchdog
Watchdog
Hardware
Monitor
Power
PCA
a. RST input circuitry
VCC
S S
as shown in Figure 22-2. Resistor value and input
To internal reset
AT89C5130A/31A-M
b. Power-on Reset
Internal Reset
VSS
+
RST
151
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