參數(shù)資料
型號: MC68HCL05C8AFN
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 82/116頁
文件大?。?/td> 781K
代理商: MC68HCL05C8AFN
Operating Modes
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A Data Sheet, Rev. 5.1
68
Freescale Semiconductor
Figure 11-1. User Mode Pinout
11.3 Self-Check Mode
Self-check mode is entered upon the rising edge of RESET if the IRQ pin is at VTST and the TCAP pin is
at logic 1.
11.3.1 Self-Check Tests
The self-check read-only memory (ROM) at mask ROM location $1F00–$1FEF determines if the MCU is
functioning properly.These tests are performed:
1.
I/O — Functional test of ports A, B, and C
2.
Random-access memory (RAM) — Counter test for each RAM byte
3.
Timer — Test of counter register and OCF bit
4.
Serial communications interface (SCI) — Transmission test checks for RDRF, TDRE, TC, and FE
flags
5.
Read-only memory (ROM) — Exclusive OR with odd ones parity result
6.
Serial peripheral interface (SPI) — Transmission test checks for SPIF and WCOL flags
The self-check circuit is shown in Figure 11-2.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
27
28
29
30
31
32
33
34
35
36
37
38
39
40
VDD
OSC1
OSC2
TCAP
PD7
PD6/TCMP
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TDO
PD0/RDI
PC0
PC1
RESET
IRQ
NC
PA7
PA5
PA4
PA3
PA2
PA1
PA0
PB0
PB1
PB2
PA6
15
16
17
18
19
20
PB4
PB5
PB6
PB7
VSS
PB3
21
22
23
24
25
26
PC2
PC3
PC4
PC5
PC6
PC7
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