MAX6909EO33 Maxim Integrated, MAX6909EO33 Datasheet - Page 10

• Manufacturer Part Number: MAX6909EO33
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: MAX6909, MAX6910r

Specifications of MAX6909EO33

• Function: Clock, Calendar, Watchdog Timekeeper, NV SRAM Control
• Rtc Bus Interface: Serial
• Time Format: HH
• Rtc Memory Size: 31 B
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-20

I
Supervisor and NV RAM Controller
Figure 1. MAX6909/MAX6910 Block Diagram
10
2
C-Compatible Real-Time Clocks with µP
______________________________________________________________________________________
BATT_ON
CX_FAIL
CE_IN
BATT
GND
OUT
SDA
WDI
SCL
V
MR
PFI
X1
X2
CC
ALM
OSCILLATOR
FAIL DETECT
INPUT SHIFT
REGISTERS
32.768kHz
CRYSTAL-
CONTROL
POWER
DIVIDERS
CONTROL LOGIC
ALARM
CONTROL
LOGIC
ADDRESS
REGISTER
WATCHDOG
DEBOUNCE
CIRCUIT
31 x 8
RAM
TIMER
FREQUENCY
1.2V
SELECT
SOURCE
SELECT
1Hz
CE CONTROL
THRESHOLDS
RAM BURST
CLK BURST
CX STATUS
SECONDS
CONTROL
CHARGER
MINUTES
CENTURY
RESET
LOGIC
TRICKLE
CONFIG
CONFIG
CONFIG
MONTH
HOURS
ALARM
ALARM
DATE
YEAR
TEST
DAY
PZT
RESET
RESET
PFO
CE_OUT