DatasheetQ Logo
Electronic component search and free download site.
Transistors,MosFET ,Diode,Integrated circuits

LC7234 View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
Manufacturer
LC7234 Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LC7234
Port F
The transfer direction of this input/output port is selected by the FPC instruction. Each pin of this port can be set
independently to be an input or output. Upon reset, all pins become inputs. In standby mode, the output drivers are
high impedance and the input signals are ignored.
Port G
This is an input port only. In standby mode, inputs are ignored.
Port H
These output ports are high-voltage, n-channel open-drain drivers, which are used for switching power supplies. Upon
reset and in standby mode, outputs are high impedance.
A/D Converter
The A/D converter is a 6-bit successive approximation type. The conversion cycle time is 1.28 ms. Full-scale output
data is 3FH for an input of (63/96) × VDD.
Power-Fail Detection
When connected to the supply, SNS is used as a power-fail detector. SNS can also be used as a standard input port.
Crystal Oscillator
The master crystal oscillator, which has a feedback resistor on-chip, requires only the connection of a 4.5MHz crystal.
Low-Power Modes
Hold Mode
When the hold-mode control pin, HOLD, is driven LOW and the HOLDEN (hold enable) flip-flop has previously
been set by an SS instruction, the LC7234 enters hold mode.
HOLD has a high-voltage input (VIH(max) = 8.0V) which can be connected directly to the power supply.
Standby Mode
When the LC7234 is in hold mode and HOLD is LOW, standby mode can be set by the CKSTP instruction.
Test Pins
Two device test pins are provided-TEST1 and TEST2. These should either be tied to VSS or left open.
Instruction Set
ADDR
Program memory address [12 bits]
b
Borrow
B
Bank number [2 bits]
C
Carry
DH
Data memory address high-order bits (row address) [2 bits]
DL
Data memory address low-order bits (column address) [4 bits]
I
Immediate data [4 bits]
M
Data memory address
N
Bit position [4 bits]
Pn
Port number [4 bits]
r
General register (Bank 0 addresses 00H to 0FH)
Rn
Register number [4 bits]
()
Contents of register or memory
( )n
Contents of bit N of register or memory
No.3620–8/12
 

Share Link: 

datasheetq.com  [ Privacy Policy ]Request Datasheet ] [ Contact Us ]