DS1216B Dallas Semiconductor, DS1216B Datasheet - Page 2

• Manufacturer Part Number: DS1216B
• Description: Smart Watch, Socket Mounted; DIP; 28; -0.3 to .0; 0 to degC; -40 to degC
• Manufacturer: Dallas Semiconductor

Specifications of DS1216B

• Application: Watch function remains transparent to RAM
• Capacitance: 5 pF (Max.) (Input), 7 pF (Max.) (Output)
• Number Of Pins: 28
• Package Type: DIP
• Temperature, Operating: 0 to +70 °C
• Temperature, Storage: -40 to +70 °C
• Voltage, Ground: -0.3 to +7.0

PIN DESCRIPTION
RST
DQ0
A2
A0
GND
CE
PIN CONFIGURATIONS
SELECTOR GUIDE
TOP VIEW
DS1216B
DS1216C
DS1216D
DS1216E
DS1216F
DS1216H
PART
- Reset, Active Low
- Data Input/Output 0 (RAM)
- Address Bit 2 (Read/Write [ROM])
- Address Bit 0 (Data Input [ROM])
- Ground
- Conditioned Chip Enable, Active Low
GND 14
[A0] 10
DQ0 11
[A2] 8
RST 1
12
13
3
28-Pin Intelligent Socket
2
4
5
6
7
9
RAM/ROM
DS1216B/C/E
RAM
RAM
RAM
ROM
ROM
RAM
18
17
16
26
15
28
27
25
24
23
22
20
19
21
RAM DENSITY
V
V
WE
OE
CE
64k/256k/1M
CC
CC
B
64k/256k
64k/256k
256k/1M
16k/64k
1M/4M
2 of 14
OE
WE
V
V
V
GND
CC
CC
CC
DQ0
[A2] 10
[A0] 12
RST
B
D - Switched V
11
13
14
15
16
- Output Enable, Active Low
- Write Enable, Active Low
- Switched V
- Switched V
32-Pin Intelligent Socket
4
6
8
9
3
5
7
2
1
PC BOARD MODIFICATION
REQUIRED FOR DENSITY
DS1216D/F/H
UPGRADE?
CC
CC
CC
No/Yes
No/Yes
for 28-/32-Pin RAM
for 24-Pin RAM
for 28-Pin RAM
No
No
No
No
23
22
21
20
19
18
17
29
28
27
26
25
24
32
31
30 V
V
WE
OE
CE
CC
CC
D