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PDF MG69L951 Data sheet ( Hoja de datos )
| Número de pieza | MG69L951 | |
| Descripción | 8-bit I/O type MCU | |
| Fabricantes | Megawin | |
| Logotipo |  |
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(Preliminary) MG69L951
8-bit I/O type MCU with 12-bit ADC
Features
Single chip 8-bit micro-controller
Operating voltage: 1.8V to 3.6V
Memory:
Program ROM : 64K bytes
Data RAM : 256 bytes
30 (6 + 24) high drive/sink I/O for LED display.
8 general input/output pins (P0.0 to P0.7)
Build in 2 channel 12-bit resolution A/D
converter +/- 4 LSB.
One 10-bit PWM output
Two AUD output pins with 8-bit resolution for
audio output
Built-in RTC (Real Time Clock).
Built-in low voltage reset (1.8V)
Built-in two programmable timers and one 16-bit
capture timer
Timer0, Timer1, Timer 2
Oscillator:
Main oscillator (Crystal, Ceramic and RC up
to 4MHz @ 2.0V) operation at crystal or RC
mode is selected by code option
Sub-oscillator (Crystal, Ceramic and RC up
to 100KHz @ 2.0V) operation at crystal or
RC mode is selected by code option
Application Field
LED Calendar, Pressure Meter, Toy Controller
This document contains information on a new product under development by MEGAWIN. MEGAWIN reserves the right to change or discontinue
this product without notice.
MEGAWIN Technology Co., Ltd. 2011 All right reserved.
2011/03 version 0.96
MEGAWIN
1 page  
Program Counter (PC)
The 16-bit program counter register provides the addresses, which step the micro-controller
through sequential program instructions. Each time the micro-controller fetches an instruction from
program memory, the lower byte of the program counter (PCL) is placed on the low-order 8 bits of
the address bus, and the higher byte of the program counter (PCH) is placed on the high-order 8
bits. The counter is incremented each time when an instruction or data is fetched from program
memory.
Stack Pointer (S)
The stack pointer is an 8-bit register, which is used to control the addressing of the variable-length
stack. The stack pointer is automatically incremented and decremented under control of the
micro-controller to perform stack manipulations by direction of either the program or interrupts
(/IRQ). The stack allows simple implementation of nested subroutines and multiple level interrupts.
The stack pointer is initialized by the user’s software.
MEGAWIN
MG69L951 Technical Summary
5
5 Page 
DIV1 interrupt selector (If the frequency of divider 1 clock source is 32.768KHz)
Address
00CFH
00CFH
Name
DIV1_STL
DIV1_SEL
Bit 7
128
Hz
-
Bit 6
256
Hz
-
Bit 5
512
Hz
-
Bit 4
1024
Hz
-
Bit 3
2048
Hz
-
Bit 2
4096
Hz
-
Bit 1 Bit 0 R W
8192
Hz
16384 -
Hz
CKO1 CKO0 -
The clock source of divider 1 is fixed to X32. The divider 1 contents can be reset to 00H by POR,
LVR only.
CKO1
0
0
1
1
CKO0
0
1
0
1
Selected DIV1 frequency
FDIV1 / 4 (8192 Hz)
FDIV1 / 32 (1024 Hz)
FDIV1 / 64 (512 Hz)
FDIV1 / 128 (256 Hz)
RTC (Real Time Clock) register (clock source is FX32/256)
Address
00E0H
00E1H
00E3H
00E4H
00E4H
Name
RTC00
RTC01
RTC_IEN
RTC_IST
RTC_ICLR
Bit 7
S7
S15
-
-
-
Bit 6
S6
S14
-
-
-
Bit 5
S5
S13
IEN5
IST5
CLI5
Bit 4
S4
S12
-
-
-
Bit 3
S3
S11
-
-
-
Bit 2
S2
S10
-
-
-
Bit 1
S1
S9
-
-
-
Bit 0
S0
S8
-
-
-
RW
-
-
-
The RTC part contains two 8-bit registers with an auto-incrementing address register, an on-chip
32.768kHz oscillator with an integrated capacitor, a frequency divider which provides the source
clock for the Real-Time Clock (RTC). The RTC contents can be reset to 00H by POR, LVR only.
Program can enable or disable the ability of triggering RTC interrupt through RTC_IEN register, and
read the RTC_IST to know which source trigging the RTC interrupt. Programmer can clear the
RTC_ISR by writing ‘1’ into the corresponding bit. The RTC00~02 and RTC_IST can be reset to
00H by POR and reset. Program can clear the RTC interrupt event by writing ‘1’ into the
corresponding bit of RTC_ICLR.
(The example frequency is 32.768KHz)
Address
00E0H
00E1H
Name
RTC00
RTC01
Bit 7
2S
512S
Bit 6
1S
256S
Bit 5
2Hz
128S
Bit 4
4Hz
64S
Bit 3
8Hz
32S
Bit 2
16Hz
16S
Bit 1
32Hz
8S
Bit 0
64Hz
4S
RW
MEGAWIN
MG69L951 Technical Summary
11
11 Page | ||
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| PDF Descargar | [ Datasheet MG69L951.PDF ] | |
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