FM6124-QG Ramtron, FM6124-QG Datasheet - Page 9

• Manufacturer Part Number: FM6124-QG
• Description: FRAM, 24KB, EVENT DATA REC, QFP44
• Manufacturer: Ramtron

Specifications of FM6124-QG

• Memory Size: 24KB
• Nvram Features: RTC
• Supply Voltage Range: 3V To 3.6V
• Memory Case Style: QFP
• No. Of Pins: 44
• Operating Temperature Range: -40°C To +85°C
• Package / Case: QFP
• Interface: I2C
• Memory: RoHS Compliant
• Interface Type: I2C, Serial, 2-Wire
• Rohs Compliant: Yes
• Access Time: 100 KBPs
• Operating Supply Voltage: 3 V to 3.6 V
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Details

Register Map
The FM6124 Event Recorder, RTC, and processor companion functions are accessed via 51 special function
registers, which are mapped to unique commands. The interface protocol is described in details in the following
pages. The registers contain timekeeping data, alarm settings, control bits, and information flags. A description of
each register follows the summary table.
T
Address
Rev. 4.0 (EOL)
July 2010
0x2D
0x2C
0x2B
0x2A
0x1D
0x1C
0x1B
0x1A
0x0D
0x0C
0x0B
0x0A
ABLE
0x33
0x32
0x31
0x30
0x2F
0x2E
0x29
0x28
0x27
0x26
0x25
0x24
0x23
0x22
0x21
0x20
0x19
0x18
0x17
0x16
0x15
0x14
0x13
0x12
0x11
0x10
0x0F
0x0E
1. FM6124 R
CLEAR
WDE
NVC
EBUFSIZE[1:0]
P11
SNL
P11
P11
P11
~M
~M
~M
~M
~M
7
-
-
EGISTER
AL/SW
P10
P10
P10
P10
BF
6
10 Minutes
10 Seconds
10 Months
-
-
-
-
0
0
0
10 Hours
Reserved
Reserved
Reserved
10 Years
10 Date
M
10 minutes
10 seconds
AP
B75F
ERR
P9
P9
P9
P9
F1
O
5
0
-
-
-
-
VERVIEW
10 hours
Number of Unread Events Recorded
Reserved
10 date
16-bit “CNT Pin” Edge Count
WDET4
WDST4
10 mo
BHF
DIR
Serial Number Byte 7
Serial Number Byte 6
Serial Number Byte 5
Serial Number Byte 4
Serial Number Byte 3
Serial Number Byte 2
Serial Number Byte 1
Serial Number Byte 0
P8
P8
P8
P8
F0
4
-
-
Day of week
Event Code
Data
WDET3
WDST3
VBC
WR3
RC
P7
P3
P7
P3
P7
P3
P7
P3
3
WDET2
WDST2
WR2
WC
P6
FC
P2
P2
P2
P2
EDRCMD[3:0]
P6
P6
P6
2
Minutes
Seconds
Minutes
Seconds
Month
Month
Hours
Hours
Year
Date
Date
WDET1
WDST1
NBEV
POLL
VTP1
WR1
P5
P1
P5
P1
P5
P1
P5
P1
1
WDET0
WDST0
SNAP
VTP0
WR0
P4
CP
P0
P4
P0
P4
P0
P4
P0
0
Event BCD Year
Event BCD Month
Event BCD Date
Event BCD Day of Week
Event BCD Hours
Event BCD Minutes
Event BCD Seconds
Event Code
Unread Events Counter MSB
Unread Events Counter LSB
Pin Pass-through B
Pin Pass-through A
Pin State– #Events snapshot
Pin Event Enable B
Pin Event Enable A
Pin Event Rise/Fall B
Pin Event Rise/Fall A
Pin Event Interrupt B
Pin Event Interrupt A
Event Recorder Control
Alarm BCD Month
Alarm BCD Date
Alarm BCD Hours
Alarm BCD Minutes
Alarm BCD Seconds
Companion Control
Serial number 7
Serial number 6
Serial number 5
Serial number 4
Serial number 3
Serial number 2
Serial number 1
Serial number 0
Edge Count MSB
Edge Count LSB
Edge Count Control
Watchdog flags
Watchdog flags
Watchdog Restart
Function
Page 9 of 53
RO
Type
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
WO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
R/W
R/W
R/W
R/W