Brother International HL 1850 Service Manual - Page 87
EEPROM, 1870N, M24C64, method, configuration., Reset, circuit, reset, S-80928ANMP., voltage, period
UPC - 012502603900
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CHAPTER 3 THEORY OF OPERATION 1.3.7 EEPROM HL-1850 HL-1870N The EEPROM is M24C64 type of two-wire method with a 8192 x 8 bits configuration. VDD3 o U14 ccou >fs > Cc vcC 6 4 U vSS 0 Cz SCL AO 5 SDA Al 7 TEST A2 M24C64- WMN6 Fig. 3-12 1.3.8 Reset circuit HL-1850 HL-1870N The reset IC is a S-80928ANMP. The reset voltage is 2.7V (typ.) and the LOW period of reset is 260ms (typ.) VD83 104 (3_, C9 C9 473 2 U10 VDD 4 1ccrs-
CHAPTER
3
THEORY
OF
OPERATION
1.3.7
EEPROM
HL
-1850
HL
-1870N
The
EEPROM
is
M24C64
type
of
two
-wire
method
with
a
8192
x
8
bits
configuration.
VDD3
o
>
f
s
>
Cc
U14
6
5
7
vcC
vSS
SCL
AO
SDA
Al
TEST
A2
4
co
cu
U
M24C64
—
WMN6
Fig.
3-12
1.3.8
Reset
circuit
HL
-1850
HL
-1870N
0
Cz
The
reset
IC
is
a
S-80928ANMP.
The
reset
voltage
is
2.7V
(typ.)
and
the
LOW
period
of
reset
is
260ms
(typ.)
VD83
104
C9
(3_,
C9
U10
4
crs
1
-
<
>
In
•
c<
m
2
G
VDD
NCH
NC
5
-
CD
OUT
473
3
VSS
S
—
B0928ANMP
UI
Fig.
3-13
R
6
-
2D
low
RESETN
2C
CH4
RESET
3-12