Renesas 公司的V850ES-Jx3 系列32位MCU包括V850ES/JC3-L系列和V850ES/JE3-L系列,集成了V850ES CPU内核和外设功能如ROM/RAM,定时器/计数器,串行接口,ADC,DAC,主要用在数码相机,电表,移动终端,数字家用电器和其它消费类电子.本文介绍了V850ES-Jx3 系列主要特性,方框图,以及移动心电图(ECG)系统框图和移动心电图(ECG)推荐的元件.
The V850ES/Jx3 microcontrollers are equipped with a high-capacity memory of 1 MB. Naturally furnished with functional interchangeability and pin interchangeability with the V850ES/Jx2 microcontrollers and capable of appropriating their development environment as well, the V850ES/Jx3 devices are capable of realizing system acceleration with ease.
The newest arrival to the lineup is the V850ES/Jx3-L microcontroller, an ultra-low power-consuming version of the V850ES/JG2 microcontroller, with less than half of its power comsumption current. The V850ES/Jx3-L lineup has achieved an industry-leading nominal power/performance ratio (0.9 mW/MIPS, which comes in under the 1 mW marker according to the Dhrystone evaluation) and actual operating current of 13 mA typ. (at 20 MHz) .Moreover, microcontrollers built in USB (peripheral) function are added in this low power V850ES/Jx3-L product lineup.
The V850ES/JC3-L and V850ES/JE3-L are 32-bit single-chip microcontrollers that include the V850ES CPU core and peripheral functions such as ROM/RAM, timer/counters, serial interfaces, an A/D converter, a D/A converter.
In addition to high real-time response characteristics and 1-clock-pitch basic instructions, the V850ES/JC3-L and V850ES/JE3-L feature multiply instructions, saturated operation instructions, bit manipulation instructions, etc., realized by a hardware multiplier, as optimum instructions for digital servo control applications. Moreover, as a real-time control system, the V850ES/JC3-L and V850ES/JE3-L enable an extremely high cost-performance for applications that require super low power consumption, such as PC peripheral device, ECR peripheral device, and industrial instrument.
V850ES-Jx3 系列主要特性:
Minimum instruction execution time: 50 ns (operating on main clock (fXX) of 20 MHz: VDD = 2.7 to 3.6 V)
200 ns (operating on main clock (fXX) of 5 MHz: VDD = 2.2 to 3.6 V)
30.5 s (operating on subclock (fXT) of 32.768 kHz)
General-purpose registers: 32 bits 32 registers
CPU features: Signed multiplication (16 16 →32): 1 to 2 clocks
Signed multiplication (32 32 →64): 1 to 5 clocks
Saturated operations (overflow and underflow detection functions included)
Most instructions can be executed in 1 clock cycle by using 32-bit RISC-based 5-stage pipeline architecture
Instruction fetching from internal ROM and accessing internal RAM for data can be
executed separately, by using Harvard architecture
High code efficiency achieved by using variable length instructions
32-bit shift instruction: 1 clock cycle
Bit manipulation instructions
Load/store instructions with long/short format
Memory space: 64 MB of linear address space (for programs and data)
Internal memory: RAM: 8/16 KB
Flash memory: 16/32/64/128/256 KB
Interrupts and exceptions:
Ports: I/O ports: 27/34/50
Timer function: 16-bit interval timer M (TMM): 1 channel
16-bit timer/event counter P (TMP): 6 channels
16-bit timer/event counter Q (TMQ): 1 channel
Watch timer: 1 channel
Watchdog timer: 1 channel
Real-time counter: 1 channel
Real-time output port: 6 bits 1 channel
Serial interface: For details about the number of incorporated channels, Asynchronous serial interface A (UARTA)
Clocked serial interface B (CSIB)
I2C bus interface (I2C)
A/D converter: 10-bit resolution: 5/6/10 channels
D/A converter: 8-bit resolution: 0/1 channels
DMA controller: 4 channels
DCU (debug control unit): JTAG interface
Clock generator: During main clock or subclock operation
7-level CPU clock (fXX, fXX/2, fXX/4, fXX/8, fXX/16, fXX/32, fXT)
Clock-through mode/PLL mode selectable
Internal oscillator clock: 220 kHz (TYP.)
Power-save functions:
HALT/IDLE1/IDLE2/STOP/low-voltage STOP/subclock/sub-IDLE/
low-voltage subclock/low-voltage sub-IDLE mode
Package: V850ES/JC3-L
40-pin plastic WQFN (6 6)
48-pin plastic LQFP (fine pitch) (7 7)
48-pin plastic WQFN (7 7)
V850ES/JE3-L
64-pin plastic LQFP (fine pitch) (8 8)
64-pin plastic FBGA (5 5) (PD70F3807, 70F3808, 70F3840 only)
Power supply voltage: VDD = 2.2 V to 3.6 V (5 MHz)
VDD = 2.7 V to 3.6 V (20 MHz)
Application Fields
Digital cameras, electrical power meters, mobile terminals, digital home electronics, other consumer devices
V850ES/JC3-L 系列产品列表(1):
V850ES/JC3-L 系列产品列表(2):
V850ES/JE3-L 系列产品列表(在开发):
图1.V850ES/JC3-L系列方框图
移动心电图(ECG)
A Mobile ECG (Electrocardiograph) is an advance over traditional electrocardiograph units. Its compact size and lightness provide portability, making it possible to measure and record cardiac dysrhythmia anywhere at any time. These small units allow medical personnel to identify cardiac irregularities early on and are very useful for examining patients. Today, though, they are now used not only by healthcare specialists but also by members of the general public.
The measurement required to produce an electrocardiogram involves the detection of a variety of electrical potential readings from electrodes taped to the patient’s skin. The electrical potential between a pair of electrodes passes through a highly precise instrumentation amplifier and is read by an A/D converter. A compact electrocardiograph must always be ready to be transported to wherever needed and has to be able to perform reliable data recording. Thus, small size, minimal weight, and extended battery life are essential.
The low-power MCUs in the M32C Family and V850ES/Jx3-L from Renesas Electronics are ideal for applications such as compact electrocardiographs. They integrate on-chip an A/D converter for sensor potential detection and provide an LCD drive circuit for the electrocardiogram’s display. This integration helps reduce the overall cost of the system and contributes to the ECG’s compact size, lightness, and long battery life..
图2.移动心电图(ECG)外形图
图3.移动心电图(ECG)系统框图
移动心电图(ECG)推荐的元件:
|
Block |
Semiconductor Device |
Recommended Product Name |
Features, etc. |
|
Main controller |
MCU |
M32C Family |
High-function, large-capacity Flash memory on-chip |
|
V850ES/Jx3-L |
High Function, Low power consumption |
|
MCU peripheral |
Reset IC |
RNA519xx Series |
Variable detection voltage |
|
Sensor |
Op-amp (CMOS) |
HA1630xxx Series |
Sensor signal amplifier, output full swing |
|
General use
surge absorption
circuit protection, etc. |
Zener diode |
HZMxNB Series |
|
|
HZU/HZC Series |
2-terminal face-mount outline |
|
HZ/HZS Series |
2-terminal glass insertion outline |
|
NNCDxxDA Series |
High ESD tolerance optimal for use in surge absorption |
|
RDxxS Series |
2-terminal face-mount outline |
|
Switching diode |
HSC119/HSU119 |
2-terminal face-mount outline |
|
HSM2838C, HSM123 |
3-terminal (2 devices included) face-mount outline |
|
Schottky diode |
HRB0502A |
3-terminal face-mount outline (low VF) |
|
HRC0103C |
2-terminal face-mount outline (low VF, low leak current) |
|
RKR0202AQE |
3-terminal face-mount outline (low VF) |
|
USB interface |
Zener diode for surge
protection |
HZC6.2Z4, HZC6.8Z4 |
Low capacitance type, 1 device included |
|
HZM6.8Z4MFAKT |
Low capacitance type, 4 devices included |
