SN8P021X/8P011X
SN8P021X/8P011X 8-bit microcontroller
1. GENERAL DESCRIPTION
T
he SN8P021X/8P011X is an 8-bit micro-controller utilized with CMOS technology fabrication and featured with low power
consumption and high performance by its unique electronic structure. This chip is designed with the excellent IC structure,
including the program memory up to 2K/1K-word OTP ROM, 64 bytes of the data memory, one 8-bit T0 basic timer, one 8-bit
timer/event counter, a watch dog timer, three interrupt sources (T0, TC0, INT0), 13 I/O pins and 8 levels stack buffer. Besides,
the user can choose desired oscillator configurations for the controller. There are three oscillator configurations to select for
generating system clock, including high-performing crystal, ceramic resonator or cost-saving RC.
2. FEATURES
♦
Memory configuration
OTP ROM size : 2048 * 16 bits for SN8P021X series
OTP ROM size : 1024 * 16 bits for SN8P011X series
RAM size : 64 * 8 bits.
♦
I/O pin configuration
(Total 13 pins)
One input port : 1 pin with wakeup function.
Two Input/output ports : 12 pins.
♦
56 powerful instructions
All of instructions are 1 word with 1 or 2 cycles'
execution.
Execution time : 1 cycle uses 4 clocks of oscillator.
All ROM area
JMP
instruction.
All ROM area Subroutine
CALL
instruction.
All ROM area lookup table function. (MOVC
instruction)
♦
Three interrupt sources :
Two internal interrupts : T0, TC0
One external interrupt : INT0
♦
♦
♦
♦
Eight levels stack buffer
An 8-bit basic timer.
An 8-bit timer/event counter.
A watchdog timer.
♦
Acceptable oscillator type :
Crystal or ceramic resonator up to 8MHz
RC oscillator up to 2 MHz
♦
Package :
PDIP : 16, 18, 20
SOP : 16, 18, 20
3. PIN ASSIGNMENT
P1.1
INT0/P0.0
VPP/RST
VSS
P2.0
P2.1
P2.2
P2.3
1 U 16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
SN8P0211P
SN8P0211S
SN8P0111P
SN8P0111S
P1.0
XIN
XOUT
VDD
P2.7
P2.6
P2.5
P2.4
P1.2
P1.3
INT0/P0.0
VPP/RST
VSS
P2.0
P2.1
P2.2
P2.3
1 U 18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
SN8P0212P
SN8P0212S
SN8P0112P
SN8P0112S
P1.1
P1.0
XIN
XOUT
VDD
P2.7
P2.6
P2.5
P2.4
P1.2 1 U 20
P1.3 2
19
INT0/P0.0 3
18
VPP/RST 4
17
VSS 5
16
VSS 6
15
P2.0 7
14
P2.1 8
13
P2.2 9
12
P2.3 10
11
SN8P0213P
SN8P0213S
SN8P0113P
SN8P0113S
P1.1
P1.0
XIN
XOUT
VDD
VDD
P2.7
P2.6
P2.5
P2.4
SONiX TECHNOLOGY CO., LTD
Page 1
Preliminary
January 2000
SN8P021X/8P011X
4. BLOCK DIAGRAM
PC
IR
FLAGS
OTP
ROM
H-OSC
TIMING GENERATOR
ALU
RAM
ACC
INTERRUPT
CONTROL
PORT 0
SYSTEM REGISTER
TIMER & COUNTER
PORT 1
PORT 2
5. PIN DESCRIPTION
PIN NAME
P1.0 ~ P1.3
RST/VPP
TYPE
I/O
I
DESCRIPTION
Port 1.0 ~ Port 1.3 bi-direction pins.
System reset inputs pin. Schmitt trigger structure, active “low”, normal stay to “high”.
During program op-code, this pin be pull to 12.5Vdc to reset internal address counter and to
write data into OTP-ROM.
Power supply input pins.
Port 2.0 ~ Port 2.7 bi-direction pins.
Oscillator input pin.
Oscillator output pin.
Port 0.0 and INT0 trigger pin with schmitt trigger structure.
VDD, VSS
P2.0 ~ P2.7
XIN
XOUT
P0.0 / INT0
P
I/O
I
O
I
Note : In order to reduce power consumption, the following procedure must be setup.
a). In the SN8P0211/8P0111 version, P1.2 ~ P1.3 must be programmed to input mode with pull up resistor.
SONiX TECHNOLOGY CO., LTD
Page 2
Preliminary
January 2000
SN8P021X/8P011X
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The application circuits illustrated in this document are for reference purposes only. SONIX
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medical life support equipment, are specifically not recommended without additional processing by
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SONiX TECHNOLOGY CO., LTD
Page 3
Preliminary
January 2000
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