ADUC7034BCPZ-RL Analog Devices Inc, ADUC7034BCPZ-RL Datasheet - Page 102

• Manufacturer Part Number: ADUC7034BCPZ-RL
• Description: IC,Battery Management,LLCC,48PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC7xxxr

Specifications of ADUC7034BCPZ-RL

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 20.48MHz
• Connectivity: LIN, SPI, UART/USART
• Peripherals: POR, PSM, Temp Sensor, WDT
• Number Of I /o: 9
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 18 V
• Data Converters: A/D 2x16b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 115°C
• Package / Case: 48-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADuC7034
WAKE-UP (WU) PIN
The wake-up (WU) pin is a high voltage GPIO controlled
through HVCON and HVDAT.
Wake-Up (WU) Pin Circuit Description
By default, the WU pin is configured as an output with an
internal 10 kΩ pull-down resistor and high-side FET driver.
In its default mode of operation, the WU pin is specified to
generate an active high system wake-up request by forcing the
external system WU bus high. User code can assert the WU
output by writing directly to HVCFG0[4].
Note that the output only responds after a 10 μs latency has elapsed;
this latency is inherent in a serial communication between the
HVCON or HVDAT MMR and the high voltage interface (see
the High Voltage Peripheral Control Interface section).
The internal FET is capable of sourcing significant current;
therefore, substantial on-chip self-heating may occur if this
driver is asserted for a long time period. For this reason, a
OUTPUT CONTROL
SHORT-CIRCUIT
PROTECTION
HVCFG0[4]
HVMON[0]
HVMON[7]
NORMAL
NORMAL
IMMUNITY
GLITCH
400µs
READBACK
HVCFG1[4]
ENABLE
SHORT-CIRCUIT
TRIP REFERENCE
~1V
Figure 41. WU Circuit, Block Diagram
Rev. B | Page 102 of 136
6.6kΩ
3.3kΩ
IO_VSS
R1
R2
VDD
INTERNAL
SENSE
RESISTOR
6kΩ
INTERNAL
10kΩ
RESISTOR
monoflop (that is, a 1.3 sec timeout timer) is included. By
default, the monoflop is enabled and disables the wake-up
driver after 1.3 sec. It is possible to disable the monoflop
through HVCFG1[1]. If the wake-up monoflop is disabled,
the wake-up driver should be disabled after 1.3 sec.
The WU pin also features a short-circuit detection feature. When
the wake-up pin sources more than 100 mA typically for 400 μs,
a high voltage interrupt is generated and HVMON[0] is set.
A thermal shutdown event disables the WU driver. The WU
driver must be re-enabled manually using HVCFG1[3] after a
thermal event.
The WU pin can be configured in I/O mode by writing a 1 to
HVCFG1[4]. In this mode, a rising or falling edge immediately
generates a high voltage interrupt. HVMON[7] directly reflects
the state of the external WU pin and indicates if the external wake-
up bus (including R
is above or below a typical voltage of 3 V.
OPEN-CIRCUIT
DIAGNOSTIC
RESISTOR
HVCFG1[0]
EXTERNAL
WU PIN
CURRENT-LIMIT
EXTERNAL
RESISTOR
LOAD
39Ω
= 1 kΩ, C
LOAD
C
91nF
LOAD
= 91 nF, and R
R
1kΩ
LOAD
EXTERNAL
WAKE BUS
LIMIT
= 39 Ω)