SX18AC/SO Parallax Inc, SX18AC/SO Datasheet - Page 13

• Manufacturer Part Number: SX18AC/SO
• Description: IC MCU 2K FLASH 50MHZ SO-18
• Manufacturer: Parallax Inc
• Series: SXr

Specifications of SX18AC/SO

• Core Processor: RISC
• Core Size: 8-Bit
• Speed: 50MHz
• Number Of I /o: 12
• Program Memory Size: 3KB (2K x 12)
• Program Memory Type: FLASH
• Ram Size: 137 x 8
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-SOIC
• Voltage - Supply (vcc/vdd): -
• Eeprom Size: -
• Data Converters: -
• Peripherals: -
• Connectivity: -

5.2 FUSEX Word (Read/Program via Programming Command)
5.3 DEVICE Word (Hard-Wired Read-Only)
© 1998 Scenix Semiconductor, Inc. All rights reserved.
Preset bits
CF
BOR1: BOR0 Brown-Out Reset; factory preset values. Bits should not be changed unless brown-out feature is to be
RAM1: RAM0 Configured number of RAM banks on chip:
MEM1:MEM0 Configured memory size on chip
Res.
RAM1:RAM0
MEM1:MEM0
Preset
Bit 11
Bit 11
Res.
Preset
Res.
Factory preset values, not intended to be user configurable. These bits should not be altered by the pro-
gramming equipment.
active low – makes carry flag input to ADD and SUB instructions.
disabled. Set bits to “11b” to disable.
00b = 1 bank
01b = 2 bank
10b = 4 bank
11b = 8 banks
00b =
01b =
10b =
11b =
Reserved bit that reads “1”
Absolute number of RAM banks on chip:
00b = 1
01b = 2
10b = 4
11b = 8 banks
00b = 512 words
01b = 1024 words
10b = 2048 words
11b = 4096 words (Reserved)
Absolute memory size on chip:
Preset
Res.
Pages Banks
1
1
4
4
Preset
Res.
1
2
4
8
Preset
Res.
(default configuration)
CF
Res.
- 13 -
BOR1
Res.
BOR0
Res.
RAM1
RAM1
RAM0
RAM0
SX18AC / SX20AC / SX28AC
MEM1
MEM1
www.scenix.com
MEM0
Bit 0
MEM0
Bit 0