参数资料
型号: SST89E554A-40-C-NJ
厂商: SILICON STORAGE TECHNOLOGY INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, MS-018AC, LCC-44
文件页数: 59/87页
文件大小: 996K
代理商: SST89E554A-40-C-NJ
62
Preliminary Specifications
FlashFlex51 MCU
SST89E554A / SST89V554A
2003 Silicon Storage Technology, Inc.
S71228-00-000
6/03
11.0 INTERRUPTS
11.1 Interrupt Priority and Polling Sequence
The device supports eight interrupt sources under a four level priority scheme. Table 11-1 summarizes the polling
sequence of the supported interrupts. Note that the SPI serial interface and the UART share the same interrupt
vector. (See Figure 11-1)
TABLE
11-1: INTERRUPT POLLING SEQUENCE
Description
Interrupt Flag
Vector
Address
Interrupt
Enable
Interrupt
Priority
Service
Priority
Wake-Up
Power-down
Ext. Int0
IE0
0003H
EX0
PX0/H
1(highest)
yes
Brown-out
-
004BH
EBO
PBO/H
2
no
T0
TF0
000BH
ET0
PT0/H
3
no
Ext. Int1
IE1
0013H
EX1
PX1/H
4
yes
T1
TF1
001BH
ET1
PT1/H
5
no
PCA
CF/CCFn
0033H
EC
PPCH
6
no
Ext. Int. 2
IE2
003BH
EX2
PX2/H
7
no
Ext. Int. 3
IE3
0043H
EX3
PX3/H
8
no
UART/SPI
TI/RI/SPIF
0023H
ES
PS/H
9
no
T2
TF2, EXF2
002BH
ET2
PT2/H
10
no
T11-1.0 1228
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