参数资料
型号: MC68HC05C8ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 149/156页
文件大小: 755K
代理商: MC68HC05C8ACB
NON-DISCLOSURE
AGREEMENT
REQUIRED
Operating Modes
General Release Specification
MC68HC05C8A Rev. 3.0
92
Operating Modes
MOTOROLA
Figure 11-1. User Mode Pinout
11.4 Self-Check Mode
Self-check mode is entered upon the rising edge of RESET if the IRQ pin
is at V
TST and the TCAP pin is at logic one.
11.4.1 Self-Check Tests
The self-check ROM at mask ROM location $1F00–$1FEF determines
if the MCU is functioning properly.The following tests are performed:
1. I/O — Functional test of ports A, B, and C
2. RAM — Counter test for each RAM byte
3. Timer — Test of counter register and OCF bit
4. SCI — Transmission test checks for RDRF, TDRE, TC, and FE
flags
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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