ADUC7128BCPZ126-RL Analog Devices Inc, ADUC7128BCPZ126-RL Datasheet - Page 38

• Manufacturer Part Number: ADUC7128BCPZ126-RL
• Description: IC,MICROCONTROLLER,16-BIT,ARM7 CPU,LLCC,64PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC7xxxr

Specifications of ADUC7128BCPZ126-RL

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 41.78MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: PLA, POR, PWM, PSM, Temp Sensor, WDT
• Number Of I /o: 28
• Program Memory Size: 126KB (126K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 10x12b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADUC7128QSPZ - KIT DEV FOR ADUC7128
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADUC7128BCPZ126-RLTR

ADuC7128/ADuC7129
BAND GAP REFERENCE
The ADuC7128/ADuC7129 provide an on-chip band gap
reference of 2.5 V that can be used for the ADC and for the
DAC. This internal reference also appears on the V
When using the internal reference, a capacitor of 0.47 μF must
be connected from the external V
stability and fast response during ADC conversions. This
reference can also be connected to an external pin (V
and used as a reference for other circuits in the system.
Table 40. REFCON MMR Bit Designations
Bit
7:1
0
Description
Reserved.
Internal Reference Output Enable.
Note: The on-chip DAC is functional only with the internal reference output enable bit set. It does not work with an external
reference.
Set by user to connect the internal 2.5 V reference to the V
to be buffered.
Cleared by user to disconnect the reference from the V
REF
pin to AGND to ensure
REF
REF
pin.
)
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REF
pin.
REF
pin. The reference can be used for external components but needs
An external buffer is required because of the low drive capability
of the V
reference input on the V
disable the internal reference. Therefore, the external reference
source must be capable of overdriving the internal reference source.
The band gap reference interface consists of an 8-bit REFCON
MMR, described in Table 40.
REF
output. A programmable option also allows an external
REF
pin. Note that it is not possible to