Datenblatt-pdf.com


CF5705BC Schematic ( PDF Datasheet ) - Nippon Precision Circuits Inc

Teilenummer CF5705BC
Beschreibung Analog Watch Stepping Motor Driver
Hersteller Nippon Precision Circuits Inc
Logo Nippon Precision Circuits Inc Logo 




Gesamt 7 Seiten
CF5705BC Datasheet, Funktion
NIPPON PRECISION CIRCUITS INC.
CF5705 series
Analog Watch Stepping Motor Driver
OVERVIEW
The CF5705 series is a low-current analog watch stepping motor driver CMOS IC with built-in 32.768 kHz
crystal oscillator circuit.
FEATURES
s 32.768 kHz crystal oscillator circuit
CG and CD built-in
s 3.6 to 1.2 V operating supply voltage range
s Operating current consumption
• VSS = –1.55V, CD = 16pF: 250 nA (max)
• VSS = –2.8V, CD = 26pF: 1000 nA (max)
Note: Current consumption depends on the built-in capacitor.
s Reset function
4 Hz and subsequent frequency dividers are reset
SERIES LINEUP
Pad coordinates
Motor
Version
CF5705AA
CF5705BC
CF5705AD
CF5705AE
CF5705CF
CF5705CG
1234
XT XTN RESET VSS
VSS RESET XT XTN
XT XTN RESET VSS
XT XTN RESET VSS
VSS TEST XTN XT
VSS TEST XTN XT
5
TEST
VDD
TEST
TEST
VDD
VDD
6
OUT2
OUT2
OUT2
OUT2
OUT2
OUT2
Cycle Pulse
7 8 (Tcy/2) (Tpw)
sec sec
OUT1 VDD 1 4.9m
OUT1 TEST 250m 23.4m
OUT1 VDD
1 23.4m
OUT1 VDD 20 5.9m
OUT1 RESET 1
4.9m
OUT1 RESET 1
3.9m
Test
(Tcy)
sec
125m
125m
125m
125m
62.5m
62.5m
1. Parasitic capacitance is included. Parasitic capacitance: CG = CD = 4pF
Built-in
capacitor1
CG CD
pF pF
4 16
4 26
4 30
4 16
4 16
4 16
PART NUMBER GUIDE
CF5705
Function(Motor, Built-in capacitor)
Pad coordinate
ORDERING INFORMATION
Device
C F 5 7 0 5 ××
Package
Chip form
NIPPON PRECISION CIRCUITS—1






CF5705BC Datasheet, Funktion
Test Function
TEST
OUT1
OUT2
CF5705 series
T < Tch
T > Tch
TCY/2
TCY/2 tCY/2 tCY/2
TPW
TPW
TPW
VDD
VSS
VDD
VSS
VDD
VSS
Normal mode (TEST = open circuit)
In test mode, a 512 Hz rectangular wave is output on
TEST. Note that the output load (probe) must be
greater than 10 Mand less than 20 pF. The motor
drive outputs on OUT1 and OUT2 continue to oper-
ate normally.
Test mode 1 (TEST = VDD)
Test mode 1 is invoked when TEST is held HIGH for
a minimum of 2 cycles of the 512 Hz clock
(TCH > 3.9 ms), otherwise it is ignored. In test mode
1, high-speed motor output operation occurs, with
the cycle time set by mask option to 62.5 or 125 ms.
Test mode 2 (TEST = VSS)
Test mode 2 is a dedicated IC test mode. In test mode
2, the device operates at 32-times speed, with the
supply voltage connected directly to the oscillator
circuit. Note that if a reset input occurs, the internal
operation is reset and device output stops. Once
operation stops, normal operation is not restored
until TEST is either open circuit or goes LOW.
NIPPON PRECISION CIRCUITS—6

6 Page







SeitenGesamt 7 Seiten
PDF Download[ CF5705BC Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
CF5705BCAnalog Watch Stepping Motor DriverNippon Precision Circuits Inc
Nippon Precision Circuits Inc

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche