Datasheet

MSP430F42xA
MIXED SIGNAL MICROCONTROLLER
SLAS587 -- FEBRUARY 2008
31
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
flash memory
PARAMETER
TEST
CONDITIONS
V
CC
MIN NOM MAX UNIT
V
CC(PGM/
ERASE)
Program and erase supply voltage 2.7 3.6 V
f
FTG
Flash timing generator frequency 257 476 kHz
I
PGM
Supply current from DV
CC
during program 2.7 V/ 3.6 V 3 5 mA
I
ERASE
Supply current from DV
CC
during erase 2.7 V/ 3.6 V 3 7 mA
t
CPT
Cumulative program time seeNote1 2.7 V/ 3.6 V 10 ms
t
CMErase
Cumulative mass erase time seeNote2 2.7 V/ 3.6 V 200 ms
Program/erase endurance 10
4
10
5
cycles
t
Retention
Data retention duration T
J
=25°C 100 years
t
Word
Word or byte program time 35
t
Block, 0
Block program time for first byte or word 30
t
Block, 1-63
Block program time for each additional byte or word
s
e
e
N
o
t
e
3
21
t
t
Block, End
Block program end-sequence wait time
seeNote3
6
t
FTG
t
Mass Erase
Mass erase time 5297
t
Seg Erase
Segment erase time 4819
NOTES: 1. The cumulative programming time must not be exceeded when writing to a 64-byte flash block. This parameter applies to all
programming methods: individual word/byte write and block write modes.
2. The mass erase duration generated by the flash timing generator is at least 11.1 ms ( = 5297x1/f
FTG
,max = 5297x1/476 kHz). To
achieve the required cumulative mass erase time the flash controller’s mass erase operation can be repeated until this time is met.
(A worst case minimum of 19 cycles are required).
3. These values are hardwired into the flash controller’s state machine (t
FTG
=1/f
FTG
).
JTAG interface
PARAMETER
TEST
CONDITIONS
V
CC
MIN NOM MAX UNIT
f
T
C
K
i
n
p
u
t
f
r
e
q
u
e
n
c
y
s
e
e
N
o
t
e
1
2.2 V 0 5 MHz
f
TCK
TCK input
f
requency seeNote1
3V 0 10 MHz
R
Internal
Internal pullup resistance on TMS, TCK, TDI/TCLK seeNote2 2.2 V/ 3 V 25 60 90 kΩ
NOTES: 1. f
TCK
may be restricted to meet the timing requirements of the module selected.
2. TMS, TDI/TCLK, and TCK pullup resistors are implemented in all versions.
JTAG fuse (see Note 1)
PARAMETER
TEST
CONDITIONS
V
CC
MIN NOM MAX UNIT
V
CC(FB)
Supply voltage during fuse-blow condition T
A
=25°C 2.5 V
V
FB
Voltage level on TDI/TCLK for fuse-blow 6 7 V
I
FB
Supply current into TDI/TCLK during fuse-blow 100 mA
t
FB
Time to blow fuse 1 ms
NOTES: 1. Once the fuse is blown, no further access to the MSP430 JTAG/Test and emulation features is possible. The JTAG block is switched
to bypass mode.