SN8F2250B Series
USB 2.0 Full-Speed 8-Bit Micro-Controller
1
PRODUCT OVERVIEW
1.1 FEATURES
Memory configuration
9 interrupt sources.
♦
♦
Flash ROM size: 10K x 16 bits, including in
system programming function.
20000 erase/write cycles.
Seven internal interrupts: T0, T1, TC0, TC1, USB,
SIO, Wakeup
RAM size: 512 x 8 bits.
Two external interrupt: INT0, INT1.
8 levels stack buffer
One SIO function for data transfer
(Serial Peripheral Interface)
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♦
♦
I/O pin configuration
Bi-directional: P0, P1, P2, P5
Wake-up: P0/P1 level change.
Pull-up resistors: P0, P1, P2, P5.
External interrupt: P0.0, P0.1 controlled by
PEDGE.
One 16-bit timer counters. (T1)
♦
♦
Three 8 bits timer counter (T0, TC0, TC1)
TC0, TC1. Each has 8 bit PWM function (duty/cycle
programmable).
Full Speed USB 2.0
Two system clocks.
Internal low clock: RC type 24KHz which Fosc =
24KHz.
External X’tal: 6MHz/12MHz/16MHz X’tal which the
Fosc will be 12MHz.
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♦
♦
♦
Conforms to USB specification, Version 2.0.
3.3V regulator output for USB D+ pin internal
1.5k ohm pull-up resistor.
Integrated USB transceiver.
Supports 1 Full speed USB device address,
1 control endpoint
3 interrupt IN/OUT endpoints, each has 16 bytes
FIFO
Four operating modes.
Normal mode: Both high and low clocks active.
Slow mode: Low clock only.
Sleep: Both high and low clocks stop.
Green mode: Periodical wakeup by timer.
Powerful instructions
Package
♦
One clocks per instruction cycle (1T)
Most of instructions are one cycle only.
All ROM area JMP instruction.
QFN16, SSOP16,SOP20, SSOP20, SOP24, QFN24,
LQFP32
All ROM area CALL address instruction.
All ROM area lookup table function (MOVC)
On chip watchdog timer.
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♦
In-system re-programmability
Allows easy firmware update
)
Features Selection Table
TIMER
T0 T1 TC0 TC1
WAKE-UP I/O
CHIP
ROM RAM STACK
SIO PWM
PACKAGE
PIN NO.
pin
SN8F2251B 10K*16 512*8
SN8F22511B 10K*16 512*8
SN8F22521B 10K*16 512*8
SN8F2253B 10K*16 512*8
SN8F22531B 10K*16 512*8
SN8F2255B 10K*16 512*8
8
8
8
8
8
8
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
3
3
5
7
7
8
8
12
16
16
24
QFN
SSOP
SOP/SSOP
SOP
QFN
LQFP
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SONiX TECHNOLOGY CO., LTD
Page 7
Version 1.1
SONIX [ SONIX TECHNOLOGY COMPANY ]
