参数资料
型号: MAXQ7670ATL/V+T
厂商: Maxim Integrated Products
文件页数: 14/38页
文件大小: 0K
描述: IC MCU W/10BIT ADC 40TQFN-EP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: MAXQ®
核心处理器: RISC
芯体尺寸: 16-位
速度: 16MHz
连通性: CAN,SPI
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 7
程序存储器容量: 64KB(32K x 16)
程序存储器类型: 闪存
RAM 容量: 1K x 16
电压 - 电源 (Vcc/Vdd): 2.25 V ~ 3.6 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 40-WFQFN 裸露焊盘
包装: 带卷 (TR)
MAXQ7670
Microcontroller with 10-Bit ADC,
PGA, 64KB Flash, and CAN Interface
______________________________________________________________________________________
21
The DVDD reset supervisor resets the MAXQ7670 when
the +2.5V DVDD falls below the reset threshold. The
processor remains in reset until DVDD returns above
the reset threshold. The C does not execute com-
mands in reset mode. See Figure 6 for the C response
to DVDD brownout and reset.
Refer to the
MAXQ7670 User’s Guide for detailed pro-
gramming information, and a more thorough descrip-
tion of POR and brownout behavior.
Internal 3.3V Linear Regulator
The integrated 3.3V 50mA linear regulator or an exter-
nal 3.3V supply powers AVDD. The integrated 3.3V reg-
ulator is inactive upon power-up. Enable the integrated
regulator with software programming after power-up.
When using an external supply, connect a regulated
3.3V supply to AVDD after applying DVDDIO.
Internal 2.5V Linear Regulator
The integrated 2.5V 50mA linear regulator or an exter-
nal 2.5V supply applied at DVDD powers DVDD.
Connect REGEN2 to GNDIO to enable the integrated
regulator. Connect REGEN2 to DVDDIO to use an
external supply. When using an external supply, con-
nect a regulated 2.5V supply to DVDD after applying
DVDDIO.
DVDDIO Current Requirements
Both internal linear regulators are capable of supplying
up to 50mA each. When using the regulators to power
AVDD and DVDD and to provide power to external
devices, make sure DVDDIO’s power input can source
a current greater than the sum of the MAXQ7670 sup-
ply current and the load currents of the two regulators.
DGND
NOMINAL
DVDD (+2.5V)
BROWNOUT
RESET
(BOR)
+2.38V
INTERNAL RESET
BOR STATE
RESET OUTPUT
+2.25V
BROWNOUT
INTERRUPT
(BOI)
DVLVL FLAG
(ASR[14])
DVBI FLAG
(ASR[4])
FLAG ARBITRARILY
CLEARED BY
C
VDBE BIT SET BY
C
DVDD BROWNOUT
INTERRUPT
THRESHOLD RANGE
Figure 6. DVDD Brownout and Reset Behavior
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