M93C46-RDS6TG STMicroelectronics, M93C46-RDS6TG Datasheet - Page 6

• Manufacturer Part Number: M93C46-RDS6TG
• Description: IC EEPROM 1KBIT 1MHZ 8TSSOP
• Manufacturer: STMicroelectronics

Specifications of M93C46-RDS6TG

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 1K (128 x 8 or 64 x 16)
• Speed: 1MHz
• Interface: Microwire, 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

M93C86, M93C76, M93C66, M93C56, M93C46, M93C06
INSTRUCTIONS
The instruction set of the M93Cx6 devices con-
tains seven instructions, as summarized in Table 4
to Table 6. Each instruction consists of the follow-
ing parts, as shown in Figure 5:
Table 4. Instruction Set for the M93C46 and M93C06
Note: 1. X = Don’t Care bit.
6/30
READ
WRITE
EWEN
EWDS
ERASE
ERAL
WRAL
Instruc
Each instruction is preceded by a rising edge on
Chip Select Input (S) with Serial Clock (C) being
held Low.
A start bit, which is the first ‘1’ read on Serial
Data Input (D) during the rising edge of Serial
Clock (C).
Two op-code bits, read on Serial Data Input (D)
during the rising edge of Serial Clock (C).
(Some instructions also use the first two bits of
the address to define the op-code).
tion
2. Address bits A6 and A5 are not decoded by the M93C06.
3. Address bits A5 and A4 are not decoded by the M93C06.
Read Data from
Memory
Write Data to
Memory
Erase/Write Enable
Erase/Write Disable
Erase Byte or Word
Erase All Memory
Write All Memory
with same Data
Description
Start
bit
1
1
1
1
1
1
1
Code
Op-
10
01
00
00
11
00
00
Address
11X XXXX
00X XXXX
10X XXXX
01X XXXX
A6-A0
A6-A0
A6-A0
x8 Origination (ORG = 0)
1,2
The M93Cx6 devices are fabricated in CMOS
technology and are therefore able to run as slow
as 0 Hz (static input signals) or as fast as the max-
imum ratings specified in Table 19 to Table 22.
Q7-Q0
D7-D0
D7-D0
Data
The address bits of the byte or word that is to be
accessed. For the M93C46, the address is
made up of 6 bits for the x16 organization or 7
bits for the x8 organization (see Table 4). For
the M93C56 and M93C66, the address is made
up of 8 bits for the x16 organization or 9 bits for
the x8 organization (see Table 5). For the
M93C76 and M93C86, the address is made up
of 10 bits for the x16 organization or 11 bits for
the x8 organization (see Table 6).
Required
Cycles
Clock
18
10
10
10
10
18
Address
11 XXXX
00 XXXX
10 XXXX
01 XXXX
A5-A0
A5-A0
A5-A0
x16 Origination (ORG = 1)
1,3
Q15-Q0
D15-D0
D15-D0
Data
Required
Cycles
Clock
25
25
9
9
9
9