Даташит sd6835 pdf ( datasheet )

t4U.com SD6830Semiconductor

4BIT MICROCONTROLLER

hee1. Description

taSSD6830 is a remote control transmitter, consists of the optimized 4-bit CPU with ROM and

aRAM. It contains power-on reset, watchdog timer and carrier frequency generator. The

.DSD6830 provide a various carrier frequency for encoding output of key matrix and has

wbuilt-in transistor to drive infrared LED. The SD6830 is supported with a software

wwdevelopment tool, which allows code development in a PC environment. It allows the user

to simulate the SD6830 on an instruction level.

om2. Features

• Number of basic instructions ————————————- 45

.c• Instruction cycle time (one word instruction)

At Fsys=480KHz —————————————- 16.67uS

UAt Fsys=455kHz —————————————- 17.58uS

• Memory size

t4ROM ————————————————— 1024 x 8 Bits

RAM —————————————————— 32 x 4 Bits

e• Input ports (D0 ~ D3, E0 ~ E3 : with pull-up resistor)

• Output ports (C, G, K, F0 ~ F7)

e• Carrier frequency generator

hFsys/12 (1/2 duty), Fsys/12 (1/3 duty), Fsys/12 (1/4 duty),

Fsys/8 (1/2 duty), Fsys/8 (1/4 duty), Fsys/11 (4/11 duty), No carrier

S• Watchdog Timer

ta• Built-in power on reset

• Single power supply ———————————————— 1.8V ~ 3.6V

a• Power dissipation (stop mode , VDD = 3V) ———————— Less than 3uW

• Package ————————————————————- 20/24 DIP, 20/24 SOP

.D• Low-power system applications such as an infrared remote controller

• MASK OPTION

w1. Divide ratio of the oscillator frequency

2. Whether connected infrared LED driver or not

ww* Descriptions of this spec sheet assume that the SD6830 include driver for infrared LED.

3. Ordering Information
Type NO.
SD6830P-option
SD6830-option
SD6830P-option
SD6830-option
Marking
SD6830P-option
SD6830-option
SD6830P-option
SD6830-option
KSI-W002-000

.comPackage Code

UDIP20

et4SOP20

heDIP24

www.DataSSOP24

1

4. Block Diagram

VSS 1

OSCIN 2

OSCOUT 3

G4

D0 5

D1 6

D2 7

D3 8

E0 9

E1 10

E2 11

E3 12

OSC
Reset
Control
Port
G
Watchdog
Timer
Z3
Carrier
Frequency
Generator
H
4L
4
A
4
RAM
4
4
3
4B
4
ALU
Port
D
4
4
STACK
10

PC 10

CY
ROM
Port
E
4
8
SF
Instruction
Decoder
4
4
Key Input
Detector
OSC
Start/Stop
Control
SD6830
Port
C
Test
Control

24 VDD

23 C/REM

22 TEST

Port
K

21 K

20 F0

19 F1

18 F2

Port
F

17 F3

16 F4

15 F5

14 F6

13 F7

Figure 4-1 Block Diagram of the SD6830
KSI-W002-000
2

5. PIN Assignment and Description
5.1 PIN Assignment for 24PINS( DIP24, SOP24)
VSS
OSCIN
OSCOUT
G
D0
D1
D2
D3
E0
E1
E2
E3
1 24
2 23
3 22
4 21
5 20
6 19
7

DSMDC668833

SD6830
18
8 17
9 16
10 15
11 14
12 13
OUTLINE 24 PIN
SD6830
VDD
C/REM
TEST
K
F0
F1
F2
F3
F4
F5
F6
F7
Figure 5-1. Pin Assignment of 24 Pins
5.2 PIN Description for 24 PINS
Symbol
VDD
VSS
TEST
OSCin
OSCout
C/REM
D0 — D3
E0 — E3
F0 — F7
G
K
Pin No.
24
1
22
2
3
23
5~8
9 ~ 12
20 ~ 13
4
21
I /O
—
—
INPUT
INPUT
OUTPUT
OUTPUT
INPUT
INPUT
OUTPUT
OUTPUT
OUTPUT
Functions
Power Supply
Ground
Input for test ( Normally connected to VSS )
Input for oscillating
Output for oscillating
1-Bit output for remote transmission
4-Bit input for key sense ( with pull-up resistor )
4-Bit input for key sense ( with pull-up resistor )
1-Bit individual output for key scan
1-Bit output
1-Bit output
I/O Type
B
A
A
C
D
D
KSI-W002-000
3