BH66F5242
24-bit Delta Sigma A/D Flash MCU
Integrated Regulator & 1 set OPAs
General Description
The device is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller
which includes a multi-channel 24-bit Delta Sigma A/D converter.
For memory features, the Flash Memory offers users the convenience of multi-programming
features. Other memory includes an area of RAM Data Memory as well as an area of true EEPROM
memory for storage of non-volatile data such as serial numbers, calibration data etc.
Analog features include a multi-channel 24-bit Delta Sigma A/D converter with both single and
differential inputs. Multiple and extremely flexible Timer Modules provide timing, pulse generation
and PWM generation functions. Communication with the outside world is catered for by including
fully integrated SPI, I2C and UART interface functions, three popular interfaces which provide
designers with a means of easy communication with external peripheral hardware. Protective
features such as an internal Watchdog Timer, Low Voltage Reset and Low Voltage Detector coupled
with excellent noise immunity and ESD protection ensure that reliable operation is maintained in
hostile electrical environments.
A full choice of internal high and low oscillators functions is provided including two fully integrated
system oscillators which require no external components for their implementation. The ability to
operate and switch dynamically between a range of operating modes using different clock sources
gives users the ability to optimise microcontroller operation and minimise power consumption.
The inclusion of flexible I/O programming features, Time-Base funcitons along with many other
features enhance the versatility of the device to suit for applications that interface directly to analog
signals and which require the low noise and high accuracy analog to digital converter.
Block Diagram
Port A
Driver
PA0~PA7
PB0~PB3
PC0~PC1
USIM
Port B
Driver
Pin-Shared
Function
Timers
I/O
Port C
Driver
Reset
Circuit
ROM
4K×16
RAM
256×8
Digital Peripherals
Pin-Shared
With Port A & B & C
INT0~
INT1
Interrupt
Controller
EEPROM
64×8
Stack
6-level
AN10
AN8
AN6
AN4
AN2
Pin- Shared
With Port A & B
Watchdog
Timer
LVD/LVR
HT8 MCU Core
SYSCLK
AN0
Time Bases
LIRC
32kHz
VTSOP
Pin-Shared
With Port A & B & C
EMI Filter
EMI Filter
SINC
FILTER
24-bit ADC
PGA
HIRC
4/8/12MHz
AN11
AN9
Clock System
AN7
AN5
AN3
AN1
VTSON
12-bit DAC
Pin-Shared
With Port A & C
OPIP
OPIN
Bandgap
(OPA_VCM)
VDD/VIN
LDO
VOREG/VREFP
VCM
VSS/AVSS/VREFN
Analog Peripherals
: USIM including SPI, I2C & UART
: Pin-Shared Node
Rev. 1.31
7
September 15, 2020
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