Renesas H8S/2138 Series Manual Pagina 62
- Pagina / 148
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
Microcomputer Technical Q&A
54
Q&A No.: QAH8S-045
Category: Power-Down State
Subject: Medium-Speed Mode
Question
Why is it that, in medium-speed mode, a divided clock is supplied to the bus masters (CPU, DTC,
DMAC), while the original system clock is supplied to the other on-chip supporting modules?
Answer
The internal clock supplied to the on-chip supporting modules is always fixed. Therefore, if
medium-speed mode is set during SCI transmission/reception, for example, SCI operation will
continue normally even though the bus master clock is changed. Medium-speed mode can thus be
set at any time without regard to the operation of the on-chip supporting modules.
Also, non-operating modules can be stopped individually by means of the module stop function.
Applicable Products
Applicability Series Applicability Series Applicability Series
Yes Entire H8S Series H8S/2655 H8S/2350
H8S/2355 H8S/2357 H8S/2345
H8S/2245 H8S/2148 H8S/2144
H8S/2138 H8S/2134 H8S/2128
H8S/2124 — — — —
- Application Note 1
- Using this Application Note 4
- Contents 5
- Bus controller 6
- Power-Down State 6
- Electrical Characteristics 6
- A/D Converter 8
- I/O Ports 8
- Clock Pulse Generator 8
- Q&A No.: QAH8S-001 9
- Q&A No.: QAH8S-002 10
- Category: CPU 10
- Q&A No.: QAH8S-003 12
- Q&A No.: QAH8S-004 13
- Q&A No.: QAH8S-005 14
- Q&A No.: QAH8S-006 15
- Subject: MAC Register 15
- Q&A No.: QAH8S-007 16
- Subject: EXR Register 16
- Q&A No.: QAH8S-008 17
- Category: Instruction 17
- Subject: SUBX Instruction 17
- Q&A No.: QAH8S-009 18
- Subject: BRN Instruction 18
- Q&A No.: QAH8S-010 19
- Q&A No.: QAH8S-011 20
- Q&A No.: QAH8S-012 21
- Instruction 21
- Q&A No.: QAH8S-013 22
- Q&A No.: QAH8S-014 23
- Subject: Stack Precautions 23
- Q&A No.: QAH8S-015 24
- Subject: Stack Pointer 24
- Q&A No.: QAH8S-016 25
- Subject: TAS Instruction 25
- Q&A No.: QAH8S-017 26
- Q&A No.: QAH8S-018 28
- Q&A No.: QAH8S-019 30
- Category: MCU Operating Modes 30
- Subject: Mode Pins 30
- Q&A No.: QAH8S-020 31
- Subject: Use of RAME Bit 31
- Q&A No.: QAH8S-021 32
- Category: Exception Handling 32
- Subject: Reset 32
- Q&A No.: QAH8S-022 34
- Category: Interrupts 34
- Disabled 34
- Q&A No.: QAH8S-023 35
- Q&A No.: QAH8S-024 36
- Q&A No.: QAH8S-025 37
- Q&A No.: QAH8S-026 38
- Q&A No.: QAH8S-027 39
- Q&A No.: QAH8S-028 40
- Q&A No.: QAH8S-029 41
- Q&A No.: QAH8S-030 43
- Q&A No.: QAH8S-031 44
- Category: Bus Controller 44
- Q&A No.: QAH8S-032 45
- Subject: 45
- Q&A No.: QAH8S-033 46
- Subject: WAIT (1) 46
- Q&A No.: QAH8S-034 47
- Subject: WAIT (2) 47
- Q&A No.: QAH8S-035 49
- Q&A No.: QAH8S-036 51
- Q&A No.: QAH8S-037 52
- Q&A No.: QAH8S-038 53
- Q&A No.: QAH8S-039 55
- Q&A No.: QAH8S-040 56
- Q&A No.: QAH8S-041 57
- Q&A No.: QAH8S-042 58
- Q&A No.: QAH8S-043 59
- Q&A No.: QAH8S-044 60
- Subject: 2-CAS DRAM Interface 60
- Q&A No.: QAH8S-045 62
- Category: Power-Down State 62
- Subject: Medium-Speed Mode 62
- Q&A No.: QAH8S-046 63
- Q&A No.: QAH8S-047 64
- Q&A No.: QAH8S-048 65
- Q&A No.: QAH8S-049 66
- Q&A No.: QAH8S-050 67
- Subject: Module Stop Mode 67
- Q&A No.: QAH8S-051 68
- Q&A No.: QAH8S-052 69
- Q&A No.: QAH8S-053 70
- Subject: RD Signal Timing 70
- Q&A No.: QAH8S-054 72
- Category: Pins 72
- Q&A No.: QAH8S-055 73
- Q&A No.: QAH8S-056 74
- Q&A No.: QAH8S-057 76
- Q&A No.: QAH8S-058 77
- Subject: WDTOVF Pin 77
- Q&A No.: QAH8S-201 79
- Category: DMAC 79
- Q&A No.: QAH8S-202 80
- Q&A No.: QAH8S-203 81
- Q&A No.: QAH8S-204 82
- Q&A No.: QAH8S-205 84
- Function 84
- Q&A No.: QAH8S-206 86
- Q&A No.: QAH8S-207 87
- Q&A No.: QAH8S-208 88
- Q&A No.: QAH8S-209 90
- Q&A No.: QAH8S-210 91
- Q&A No.: QAH8S-211 92
- Q&A No.: QAH8S-212 94
- Subject: DREQ Signal Input 94
- Q&A No.: QAH8S-213 95
- Category: DTC 95
- Subject: Nature of DTC 95
- Q&A No.: QAH8S-214 96
- Q&A No.: QAH8S-215 97
- Q&A No.: QAH8S-216 98
- Q&A No.: QAH8S-217 99
- Q&A No.: QAH8S-218 100
- Category: TPU 100
- Q&A No.: QAH8S-219 101
- Subject: Cascaded Connection 101
- Q&A No.: QAH8S-220 102
- Q&A No.: QAH8S-221 103
- Q&A No.: QAH8S-222 104
- Q&A No.: QAH8S-223 105
- Subject: Two-Phase PWM Output 105
- Applicable Products 106
- Q&A No.: QAH8S-224 107
- Category: WDT 107
- Q&A No.: QAH8S-225 108
- Category: SCI 108
- Subject: SCI Initialization 108
- Q&A No.: QAH8S-226 109
- Q&A No.: QAH8S-227 110
- Q&A No.: QAH8S-228 111
- Q&A No.: QAH8S-229 112
- Q&A No.: QAH8S-230 113
- Q&A No.: QAH8S-231 114
- Q&A No.: QAH8S-232 117
- Q&A No.: QAH8S-233 118
- Subject: RDRF Flag Set Timing 118
- In Synchronous Mode 120
- Q&A No.: QAH8S-234 121
- Q&A No.: QAH8S-235 122
- External Clock 122
- Q&A No.: QAH8S-236 123
- Q&A No.: QAH8S-237 124
- Q&A No.: QAH8S-238 125
- Q&A No.: QAH8S-239 126
- Q&A No.: QAH8S-240 129
- Subject: Data Transfer to TDR 129
- Q&A No.: QAH8S-241 131
- Subject: TDRE Flag Set Timing 131
- 2. Synchronous mode 134
- Q&A No.: QAH8S-242 135
- Q&A No.: QAH8S-243 136
- Category: A/D Converter 136
- Q&A No.: QAH8S-244 138
- Q&A No.: QAH8S-245 140
- Q&A No.: QAH8S-246 142
- Category: I/O Ports 142
- Q&A No.: QAH8S-247 143
- Subject: Reserved Bits 143
- Q&A No.: QAH8S-248 144
- Subject: Disabling 144
- Q&A No.: QAH8S-249 145
- Q&A No.: QAH8S-250 146
- Q&A No.: QAH8S-251 147
Relacionado con productos y manuales para No Renesas H8S/2138 Series
No Renesas H8S/2636 Series Información técnica
(46 paginas)
(46 paginas)
No Renesas H8/2318 Series Manual de usuario
(18 paginas)
(18 paginas)
No Renesas FP-144L Información técnica
(39 paginas)
(39 paginas)
No Renesas H8SX/1668R Manual de usuario
(44 paginas)
(44 paginas)
No Renesas H8SX/1520 Manual de usuario
(34 paginas)
(34 paginas)
No Renesas H8/3048 Manual de usuario
(32 paginas)
(32 paginas)
No Renesas FP-100B Información técnica
(30 paginas)
(30 paginas)
No Renesas FP-128 Manual de usuario
(32 paginas)
(32 paginas)
No Renesas H8SX/1668R Información técnica
(35 paginas)
(35 paginas)
No Renesas H8S/2238 Series Manual de usuario
(24 paginas)
(24 paginas)
No Renesas TFP-100G Información técnica
(24 paginas)
(24 paginas)
No Renesas M3A-HS85 Manual de usuario
(70 paginas)
(70 paginas)
No Renesas PCA7302E1F-80 Manual de usuario
(58 paginas)
(58 paginas)
No Renesas H8S/2276 Información técnica
(32 paginas)
(32 paginas)
No Renesas PCA4738F-176A Manual de usuario
(26 paginas)
(26 paginas)
No Renesas H8/36912 Información técnica
(33 paginas)
(33 paginas)
No Renesas H8SX/1658R Manual de usuario
(6 paginas)
(6 paginas)
No Renesas SH7050 Series Información técnica
(27 paginas)
(27 paginas)
© 2020, manymanuals.es. Todos los derechos reservados | 0.048 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales