gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 53
gc80c520a
Manufacturer Part Number
gc80c520a
Description
Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
Manufacturer
CORERIVER Semiconductor
Datasheet
1.GC80C520A.pdf
(187 pages)
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SM1
0
0
1
1
MiDAS1.0 Family
SM0
0
1
0
1
SMOD
Overflow
Timer 1
1/2
Mode
RCLK
TCLK
0
1
2
3
0
1
0
0
10 bit
11 bit
11 bit
Data
Size
8 bit
Overflow
Timer 2
1
1
Table 6-8 Summary of Modes in UART
Data Format
8 data bit
Start bit,
8 data bit,
stop bit
Start bit, 8 data bit,
programmable bit,
stop bit
Start bit, 8 data bit,
programmable bit,
stop bit
Write to
RXD
Figure 6-24 UART Mode 3
SBUF
Transition
Detector
1-to-0
1/16
Read SBUF
Load SBUF
Sample
Serial Port
Interrupt
Page 53 of 187
D
CL
TB8
Bit Detector
S
Q
START
TX CLOCK
START
RX CLOCK
Internal BUS
Internal BUS
1/16
Zero Detector
RX CONTROL
TX CONTROL
Input Shift Register
SBUF
SBUF
Baud Rate
1/4 * oscillator clock
1/32 * Timer 1 overflow (SMOD1=0)
1/16 * Timer 1 overflow (SMOD1=1)
1/16 * Timer 2 overflow rate
1/32 * oscillator clock (SMOD1=0)
1/16 * oscillator clock (SMOD1=1)
1/32 * Timer 1 overflow (SMOD1=0)
1/16 * Timer 1 overflow (SMOD1=1)
1/16 * Timer 2 overflow rate
SHIFT
1FFh
RI
TI
(9 bits)
SHIFT
LOAD
DATA
SEND
SBUF
Shift
TXD
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