668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 139
668-0010
Manufacturer Part Number
668-0010
Description
IC MPU RABIT3000 55.5MHZ 128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 668-0010
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 3000 8-Bit
Speed
55.5MHz
Voltage
2.5V, 2.7V, 3V, 3.3V
Mounting Type
Surface Mount
Package / Case
128-LQFP
Features
-
Other names
316-1016
- Current page: 139 of 312
- Download datasheet (2Mb)
A sample clocked serial interrupt handler is shown below for Serial Port B.
Chapter 17 Serial Ports A – D
clocked_serb_isr::
rx_ready:
check_for_tx:
done:
push af
ioi ld a, (SASR)
bit 7,a
push af
jr
ioi ld a, (SADR)
; do something with received byte here
ld a, 0x41
ioi ld (SACR), a
pop af
bit 3,a
jr nz, done
; get next byte to be transmitted into A here
ioi ld (SADR), a
pop af
ipres
ret
z, check_for_tx
; save used registers
; get status
; check if byte ready in RX buffer
; save status for next check
; read byte and clear interrupt
; set bits 6-7 to 01, the other bits should
; represent the desired SACR setup
; start a new receive operation
; check if TX buffer was emptied
; load TX buffer with next byte and clear interrupt
; restore used registers
129
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