| 01. |
Setting GPIO by MOV or MOVX instruction? |
| Ans. |
Support both MOV & MOVX instruction. MOVX instruction is for GPIOA~GPIOF port. MOV instruction is for typical 8051 I/O. MCU provides 4 GPIO pins supporting 8051 Port 0 functions, can use MOV, SETB and CLR instruction to set the level status of GPIO. For more details please consult the GPIO Example Program. |
| |
| 02. |
How to reach the same effect with using external RESET pin for reset? |
| Ans. |
Due to WT56F216/WT51F104 both build in LVD/LVDR, it can reach the effect by Low Voltage Detection Reset. For more details please consult the Low Voltage Detection Reset (LVDR) section in the Data Sheet. |
| |
| 03. |
How long does it take from MCU power-up to Reset completed? And how to solve the problem of peripheral LED blinking during this period? |
| Ans. |
It takes 16ms from WT56F216/WT51F104 power-up to Reset completed.
The GPIO initial value of WT56F216/WT51F104 is Input Tri-state, and thus LED will not blink. |
| |
| 04. |
How to keep memory data for WT56F216/WT51F104 in power-down mode? |
| Ans. |
Both WT56F216/WT51F104 support emulated E2PROM, and thus all status can be saved in flash after completing each power-on procedure. For more details please consult the Emulated E2PROM application documents. |
| |
| 05. |
The power consumption of WT56F216/WT51F104 in each modes. |
| Ans. |
Four operation mode switching is illustrated in the figure below: (referring to Data Sheet “Power Management” section for more details)
Operating
Mode |
8051 |
Peripheral
Clock |
XTAL
(12MHz) |
XTAL
(32.768kHz) |
IRC
(12MHz) |
IRC
(32kHz) |
Power
Consumption@5V |
| Normal 1 |
on |
on |
off |
off |
on |
on |
3.6mA |
| Normal 2 |
on |
on |
off |
on |
on |
on |
3.6mA |
| Normal 3 |
on |
on |
on |
off |
off |
off |
4.4mA |
| Green 1 |
on |
on |
off |
off |
off |
on |
17uA |
| Green 2 |
on |
on |
off |
on |
off |
off |
40uA |
| Idle 1 |
off |
on |
off |
off |
on |
on |
650uA |
| Idle 2 |
off |
off |
off |
off |
on |
on |
500uA |
| Sleep 1 |
off |
off |
off |
off |
off |
off |
300uA |
| Sleep 2 |
off |
off |
off |
off |
off |
off |
5uA |
|
| |
| 06. |
How long does it take to program all over the flash for WT56F216 & WT51F104? |
| Ans. |
| WT56F216 programming 16Kbyte takes 20 seconds. |
WT51F104 programming 4Kbyte takes 3.5 seconds. |
 |
 |
|
| |
| 07. |
IRC 12MH Frequency Tolerance. |
| Ans. |
Internal 12 MHz RC Oscillator Temperature Tolerance table.
| Parameter |
Symbol |
Pin/condition |
Specification |
Units |
| Min |
Typ. |
Max |
| RC Frequency |
FRC |
VDD = 1.8V ~ 5.5V |
Ans. |
12 |
Ans. |
MHz |
| Frequency Tolerance@VDD=2.2V(fixed) |
ΔFRC/FRC |
Without external oscillator for calibrating 0°C ~ 70°C |
Ans. |
± 3 |
Ans. |
% |
| Without external oscillator for calibrating-40°C ~ 85°C |
Ans. |
± 5 |
Ans. |
% |
| Without external oscillator for calibrating-40°C ~ -125°C |
Ans. |
± 7 |
Ans. |
% |
| With external oscillator for calibrating |
Ans. |
Ans. |
± 2 |
% |
|
| |
| 08. |
Safety requlation testing for WT56F216 & WT51F104 |
| Ans. |
Tested by the qualified LAB, EFT can reach ±4KV; ESD Contact can reach ±4KV; Air can reach ±15KV. |
| |
| 09. |
Converting modes of ADC. |
| Ans. |
| 1.Single Mode: |
turning on ADC & enabling Single conversion, then reading data after the conversion is completed. |
| 2.Continuous Mode: |
turning on ADC & enabling continuous conversion, and MCU will keep on converting. After the convertion is completed, it will update A/D converter converting High/Low bytes Register. |
| 3.Timer Auto Mode: |
working together with the time set by the Watch timer, Timer auto converting ADC data. |
|
| |
| 10. |
Is output phase of PWM adjustable? |
| Ans. |
PWM Control Register provides output phase setting bit. |
| |
| 11. |
Does WT56F216/WT51F104 support external crystal oscillator 4 MHz or 8 MHz? |
| Ans. |
It can support external crystal oscillator 4 MHz or 8 MHz but requiring enabling ISP_CHG_12M & UART_ISP_CHG bit in the program. IRC_12M_PD1 & IRC_12M_PD2 can be turned off only after the Source clock selecting external oscillator. For more details please consult the Power Management section and Example program in the Data Sheet. |
| |
| 12. |
oes WT56F216/WT51F104 support Compile program? Is Emulated and programming function available in KEIL C environment? |
| Ans. |
WT56F216/WT51F104 supports Compile program and it also supports Emulated and programming function in KEIL C environment. |
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