71M6521DE Datasheet, PDF (96/107 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6521DE/DH/FE Data Sheet
TIMING SPECIFICATIONS
RAM AND FLASH MEMORY
PARAMETER
CE DRAM wait states
CONDITION
CKMPU = 4.9 MHz
CKMPU = 1.25 MHz
CKMPU = 614 kHz
MIN
TYP
5
2
1
Flash Read Pulse Width
Flash write cycles
Flash data retention
Flash data retention
Flash byte writes between page or mass
erase operations
V3P3A=V3P3SYS=0
BROWNOUT MODE
-40°C to +85°C
25°C
85°C
30
20,000
100
10
FLASH MEMORY TIMING
PARAMETER
Write Time per Byte
CONDITION
MIN
TYP
Page Erase (512 bytes)
Mass Erase
MAX
UNIT
Cycles
Cycles
Cycles
100
ns
Cycles
Years
Years
2
Cycles
MAX
42
20
200
UNIT
µs
ms
ms
EEPROM INTERFACE
PARAMETER
Write Clock frequency (I²C)
Write Clock frequency (3-wire)
CONDITION
MIN
TYP
MAX UNIT
CKMPU=4.9 MHz, Using
interrupts
78
kHz
CKMPU=4.9 MHz, “bit-
banging” DIO4/5
150
kHz
CKMPU=4.9 MHz
500
kHz
RESET and V1
PARAMETER
Reset pulse fall time
Reset pulse width
1_{Guaranteed by design; not production tested.}
RTC
PARAMETER
Range for date
CONDITION
CONDITION
MIN
TYP
MAX UNIT
1¹
µs
5
µs
MIN
TYP
MAX UNIT
2000
-
2255
year
Page: 96 of 107
Rev 2